B09_Solicitation_Amendment_A00005_-_Attachment_1_-_PWS_0005.docx
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- DINO - Hazardous Tree Removal with Certified Arbor Federal contract opportunity
- Solicitation number
- 140P1426Q0001
About this file
This is a Performance Work Statement (PWS) for hazardous tree mitigation services at Dinosaur National Monument in Utah. The contractor must provide technical expertise, labor, equipment, supervision by a certified arborist, transportation, and operating supplies to remove deadwood and mitigate hazardous conditions at three primary locations: Green River Campground, Split Mountain Campground, and Employee Living Quarters (Housing Area). Work scope includes pruning dead and dying limbs, removal of hazardous trees, light shaping and thinning, and bucking/chipping of removed material, all performed in compliance with ANSI A300 arboricultural standards. The PWS specifies 31 detailed pruning and removal tasks at Green River Campground involving primarily Poplar trees rated as moderate to high risk; 10 tasks at Split Mountain Campground including Poplar, Narrowleaf Cottonwood, and other species; and 7 tasks at the Employee Housing Area involving Black Ash, Carolina Poplar, Silver Poplar, Honey Locust, and Boxelder trees requiring extensive intervention due to declining health.
The period of performance is September 1, 2026 through November 30, 2026, with an anticipated award date of August 20, 2026. The contractor is responsible for quality control, safety compliance, and all necessary equipment including barricades, warning signs, and traffic control devices. Specific requirements include providing proof of weed-free equipment to prevent noxious weed spread, equipping chainsaws with spark arrestors for fire prevention, and scheduling operations to minimize disturbance to nesting birds and natural habitats. Government quality assurance will be conducted through random onsite inspections, 100 percent inspection of critical tasks such as hazardous removals, post-work reviews of cleanup and safety, and review of contractor documentation including daily progress updates. The contract is with the Department of the Interior National Park Service Intermountain Region, and the solicitation number is 140P1426Q0001.
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PERFORMANCE WORK STATEMENT
Dinosaur National Monument - Hazardous Tree Mitigation Services Background This purchase order requires hazardous tree mitigation and related work in two front country campgrounds and other developed sites in compliance with this purchase order. This includes at minimum furnishing technical expertise, labor, equipment, supervision (by an arborist), transportation, and operating supplies.
General Work Requirements
· The primary focus is removal of deadwood and mitigation of hazardous conditions.
· While performing hazard mitigation, the Contractor shall conduct light pruning, thinning, shaping, and balancing as appropriate, as well as removal of dead trees where indicated.
· All pruning shall follow proper arboricultural techniques to preserve tree structure and health.
Work Locations and Task Descriptions:
There is not a physical address for each location, however the following GPS coordinates (decimal degrees) are provided:
Utah Housing Complex: 40.44129, -109.25259 this is adjacent to the quarry visitor center.
Split Mountain Campground: 40.42156, -109.24423 this is approximately 3 miles from the quarry visitor center.
Green River Campground: 40.43685, -109.30403 this is approximately 5 miles from the quarry visitor center.
Quarry Visitor Center 11625 E 1500 S Jensen, UT 84035
Green River Campground Work shall generally proceed from the south end of the campground and include the following:
Pruning and Removal Tasks
Green River Campground
| No. |
| location |
| Tree name |
| Notes |
| Rating |
| Action |
| 1 |
| Site #66 |
| Poplar |
| Numerous dead, dying and broken limbs |
| Moderate |
| Prune out dead limbs |
| 2 |
| Site #65 |
| Poplar |
| Dead, dying and broken limbs |
| Moderate |
| Prune out dead limbs |
| 3 |
| Site #63 |
| Poplar |
| Dead, dying and broken limbs |
| Moderate |
| Prune out dead limbs |
| 4 |
| Site #61 |
| Poplar |
| Dead Tree |
| High |
| Remove |
| 5 |
| Site #64 |
| Poplar |
| 2 trees to consider dead and dying limbs out |
| Moderate |
| Prune out dead limbs |
| 6 |
| Site #59 |
| Poplar |
| Numerous dead and dying limbs |
| Moderate |
| Prune out dead limbs |
| 7 |
| Site #58 |
| Poplar |
| Dead and broken limbs |
| Moderate |
| Prune out dead limbs |
| 8 |
| Site #45 |
| Poplar |
| Dead, dying and broken limbs |
| Moderate |
| Prune out dead |
| 9 |
| Site #47 |
| Poplar |
| Numerous dead limbs |
| Moderate |
| Prune out dead |
| 10 |
| Site #46 |
| Poplar |
| Very heavy, prone to breaking up |
| Low |
| Tuck in, shape and lighten |
| 11 |
| Site #53 |
| Poplar |
| Numerous dead and broken limbs |
| Moderate |
| Prune out the dead |
| 12 |
| Site #54 |
| Poplar |
| 3 trees to be pruned of dead and broken limbs |
| Moderate |
| Prune out the dead limbs |
| 13 |
| Site #19 |
| Poplar Tree |
| Numerous dead and broken limbs to prune |
| Moderate |
| Prune out dead limbs |
| 14 |
| Site #16 |
| Poplar Tree |
| Numerous dead and broken limbs |
| Moderate |
| Prune out damaged limbs |
| 15 |
| No camping area by site #14 |
| Poplar Tree |
| 2 Poplar trees with numerous dead, dying and broken limbs |
| Moderate |
| Prune out the dead, dying and broken limbs |
| 16 |
| Site #18 |
| Poplar Tree |
| Extremely beautiful tree. Keep it safe and happy. |
| Low |
| Maintenance prune |
| 17 |
| Site #21 |
| Poplar Tree |
| Two trees with dead and dying limbs |
| Moderate |
| Prune out the dead and dying |
| 18 |
| Site 3 |
| Poplar Tree |
| Numerous dead and dying limbs |
| Moderate |
| Prune out the dead and dying |
| 19 |
| Site #1 |
| Poplar Tree |
| Dead Tree |
| High |
| Remove dead tree |
| 20 |
| Corner by Stop Sign |
| Poplar Trees |
| 4 Trees that have numerous dead and dying limbs |
| Moderate |
| Prune out the dead and dying limbs. |
| 21 |
| Site #4 |
| Poplar Trees |
| 4 trees to be pruned of dead and dying limbs, 2 large and 2 small |
| Moderate |
| Prune out the dead and dying limbs. |
| 22 |
| Site #55 |
| Poplar Trees |
| 4 trees with numerous dead, dying and broken limbs |
| Moderate |
| Prune out the dead dying and broken limbs |
| 23 |
| By “No Litter sign |
| Poplar Tree |
| Large dead limb to be pruned out |
| Low |
| Remove large limb |
| 24 |
| By east dumpster |
| Poplar Tree |
| Dead and broken limbs |
| Moderate |
| Prune out dead limbs |
| 25 |
| Site #36 |
| Poplar Tree |
| Dead and broken limbs |
| Moderate |
| Prune out dead limbs |
| 26 |
| Between Site #32 and #35 |
| Poplar Trees |
| 5 trees total, prune out dead, dying and broken limbs. |
| Moderate |
| Prune out dead dying and broken limbs |
| 27 |
| Site #24 |
| Poplar Trees |
| 2 trees in this area with dead and dying limbs |
| Moderate |
| Prune out dead dying and broken limbs |
| 28 |
| Site #27 one tree north and one tree south |
| Poplar Trees |
| 2 trees in this area to consider. Numerous dead and dying limbs |
| Moderate |
| Prune out dead and broken |
| 29 |
| Site #30 |
| Poplar Trees |
| Two trees to consider with dead and dying limbs |
| Moderate |
| Prune out dead dying and broken limbs |
| 30 |
| Site #37 |
| Poplar Trees |
| Two trees to prune out dead and dying limb |
| Moderate |
| Prune out dead limbs |
| 31 |
| The Ranger Cabin |
| Poplar Trees |
1 Boxelder Tree
| Two Poplar Trees to with dead and broken limbs and 1 boxelder tree |
| Moderate |
| Prune out the dead, dying and broken limbs |
Split Mountain Campground This area contains fewer but significant trees requiring professional care.
Pruning Tasks
Split Mountain Campground
| No. |
| location |
| Tree name |
| Notes |
| Rating |
| Action |
| 1 |
| A picnic Site |
| Poplar Trees |
| 4 Large Poplar Trees numerous dead, dying and broken limbs |
| Moderate |
| Prune out dead limbs out of the four trees |
| 2 |
| C Picnic Site |
| Poplar Trees |
| 5 Large Poplar Trees numerous dead, dying and broken limbs |
| Moderate |
| Prune out dead limbs out of the 5 trees |
| 3 |
| B Picnic Site |
| Poplar Trees |
| 14 Large Poplar Trees numerous dead, dying and broken limbs |
| Moderate |
| Prune out dead limbs out of the 14 trees |
| 4 |
| The boat launch area |
| Narrowleaf Cottonwood Trees |
| 2 Trees with some dead and dying limbs, tucking in and shaping |
| Low |
| Prune the dead out of the trees |
| 5 |
| The boat launch area (west) |
| Narrowleaf Cottonwood Tree |
| Tree with a large broken limb hanging down but good attachment |
| Moderate |
| Prune out dead limbs |
| 6 |
| The boat launch area to trail heading west |
| Poplar Tree |
| Numerous dead and dying limbs |
| Moderate |
| Prune out dead limbs |
| 7 |
| The boat launch area to trail heading west |
| 2 more Poplar Trees |
| Dead and broken limbs |
| Moderate |
| Prune out dead limbs |
| 8 |
| The Desert Voices Sign |
| Poplar |
| Dead, dying and broken limbs |
| Moderate |
| Prune out dead |
| 9 |
| Tree closer to the parking lot area but still west |
| Poplar |
| Numerous dead limbs. This is a chunky tree, not very tall. Has numerous dead, dying and broken limbs |
| Moderate |
| Prune out dead |
Employee Living Quarters (Housing Area) This area requires the most extensive intervention due to declining tree health and lack of irrigation.
General Guidance Many trees require removal rather than pruning due to advanced decline; trees with sufficient vitality shall be removed rather than pruned Pruning and Removal Tasks
Employee Housing Area
| No. |
| location |
| Tree name |
| Notes |
| Rating |
| Action |
Southwest House [Photos 1-2, 26, 29-31]
| Black Ash Trees |
| 2 Black Ash Trees with a lot of dead, questionable health |
| Moderate |
| Prune out dead limbs out of the two trees |
| 2 |
| House 4-6 |
[Photos 18-20, 22, 25]
| 3 Black Ash Tree and one Carolina Poplar |
| The ash trees have a lot of dead and questionable health the poplar tree is dead |
| Moderate for the ash trees high risk for the poplar |
| Prune out dead limbs out of the 2 ash trees and remove the poplar |
| 3 |
| House 4-5 |
[Photos 14-17] Dead Poplar 3 Black Ash Trees
| There is a dead poplar on the east and 3 ash trees in the south to be pruned. |
| Moderate for the ash and high for the poplar |
| Prune out dead limbs out of the 3 trees and remove the poplar |
| 4 |
| House 4-4 |
[Photos 11-13]
| Carolina Poplar, Black Ash, Silver Poplar Trees |
| The tree actually looks really good just light pruning. The Black Ash Could use a lot of work. The Silver Poplar is mostly dead and shall come out. |
| Low for the Carolina Poplar, Moderate for the ash and high for the Silver poplar |
| Prune the dead out of the trees, remove the dead Silver Poplar. |
| 5 |
| House 4-8B |
[Photo 5]
| Black Ash Trees |
| There are three Black Ash Trees to prune |
| Moderate |
| Prune out dead limbs |
| 6 |
| House 4-8D |
[Photos 3, 5-8, 9-10 21, 23-24, 27-28]
| Carolina Poplar and Honey Locust Trees |
| Poplar Tree on the east looks good, some light pruning and a locust tree northeast |
| Moderate |
| Prune out dead limbs, make them safe and look good. |
| 7 |
| House 4-9A and 4-9D |
[Photos 4, 32-34]
| Black Ash Trees, Honey Locust, Boxelder Trees |
| Two Black Ash Trees on the south by road, Two locust trees and one ash tree on the southeast, One large locust, one small locust and one ash on the northeast. Large Boxelder Trees on the northeast. |
| Moderate |
| Prune out dead limbs, shape and balance the tree. |
Period of Performance (POP):
Period of performance will be scheduled between the park and contractor within the period of performance that is agreeable to both parties.
POP: 09/01/2026 – 11/30/2026
Anticipated Award Date: 8/20/2026
Definitions Arboriculture. The art, science, technology, and business of commercial, public, and utility tree care.
Arborist. An individual engaged in the profession of arboriculture who, through experience, education and related training, possesses the competence to provide for, or supervise the management of trees and other woody plants. An arborist is familiar with the practices and hazards of pruning and the equipment used in such operations.
Bucking. Cutting a felled tree and/or tree limbs into smaller pieces for ease in moving, transporting or chipping.
Assessment data. Shall include tree species, location, tree ID number (front country locations only), DBH, height, canopy spread, tree condition, type and severity of defect(s), assigned risk rating, recommended risk mitigation strategy, site ID, indication of whether assessment is for an individual tree (e.g., cottonwood), or a tree group (e.g., boxelder).
Chipping. Operation of mobile chipper shredder or equivalent, either wheeled or tracked, to reduce vegetation.
Contractor. The awardee of this purchase order and their business affiliates.
Contracting Officer (CO). The person who is a warranted CO that holds ultimate authority to modify the PO, stop work, or determine if work is acceptable.
Contracting Officer Representative (COR). The on-site contract administrator for the Contracting Officer.
DBH (diameter at breast height). The diameter of the trunk measured at a point 4.5 feet above the ground level on the uphill side of the tree (usually outside bark).
Failure (tree failure). Breakage of stem or branches, or loss of mechanical support in the root system.
Lopping and scattering. Limbs/branches shall be cut and left on the ground but shall be placed to give the appearance of natural habitat and to avoid obstructing movement in the campsite.
Lopping and stacking. Contractors shall be required to stack limbs/branches to discourage camping beneath residual hazardous trees.
Mitigation. The process of diminishing risk.
NPS Technical Representative. The designated technical staff person assigned to provide on-site technical and logistical support to the Contractor.
Period of Performance. The time-period allowed in the purchase order for completion of contract work.
Pruning. The selective removal of plant parts to meet specified goals and objectives.
Post-award conference: Meeting between the contracting officer, NPS staff, and contractor to discuss the awarded purchase order to address any specific questions, discuss safety, quality assurance and control, or any other topics that need discussion.
Quality Assurance. The actions taken by the Government to assess the results to determine that they meet contract requirements.
Quality Control. Those actions taken by a Contractor to control the production of outputs to ensure that they conform to the contract requirements.
Removal. Felling of a tree that cannot be reasonably mitigated.
Shall. Denotes a mandatory requirement.
Structural defect. A feature, condition, or deformity of tree or tree parts that indicate a weak structure and contributes to the likelihood of failure.
Structural pruning. Pruning to improve branch architecture.
Target. People or property that could be injured or damaged by the failure of a tree or tree parts.
Tree risk. The likelihood and consequences of failure of tree or tree parts.
Location and Description The work shall be performed at locations within Dinosaur National Monument in Utah. Work sites may include front country campgrounds and other developed sites.
Front country campgrounds and recreation/developed sites include:
1) Split Mountain Campground (Utah)
2) Green River Campground (Utah)
3) Employee Living Quarters (Housing Area; Utah)
Quality Assurance Surveillance Plan Quality assurance will be performed by the Government as described in the Quality Assurance Surveillance Plan (QASP). Deduction for work shall include rework at no cost to the Government or Government acceptance with price reduction.
Performance will be evaluated using:
· Compliance with ANSI A300 pruning/removal standards
· Accuracy of tree identification and execution per PWS
· Safety compliance and incident-free operations
· Timely communication with COR and CO
· Professionalism, organization, and care for public and natural resources The government may use any combination of surveillance:
· Random On‑Site Inspections Unannounced checks by COR/Technical Representative to verify proper arboricultural technique, safety, environmental compliance, and tree-by-tree scope adherence.
· 100% Inspection of Critical Tasks Activities such as hazardous removals, large limb removals, and work around visitor areas will be observed fully.
· Post‑Work Review The COR will assess each completed location to verify cleanup, safety, and conformity to PWS.
· Contractor Documentation Review Includes daily/weekly progress updates, safety checks, and any required notifications.
· Performance Trend Analysis If repeated deficiencies occur, CO may require a corrective action plan (CAP).
Special Requirements Contractor Quality Control The Contractor, not the Government, is responsible for management and quality control actions to meet the terms of this contract.
Barricades, Warning Signs, and Other Devices The Contractor shall provide, erect, and maintain all necessary barricades, suitable and sufficient lights, danger signals, signs, and other traffic control devices, and shall take all necessary precautions for the protection of the workers and safety of the public. Roads closed to traffic shall be protected by effective barricades, and obstructions shall be illuminated during the hours of darkness. Suitable warning signs shall be provided to properly control and direct traffic.
The Contractor shall erect warning signs in advance to any place on the project where operations may interfere with the use of the road or trail by traffic and at all intermediate points where the new work crosses or coincides with an existing road, trail or public use area.
Weed-Free Equipment To prevent the potential spread of noxious weeds into the project area, the Contractor shall be required to furnish the NPS Technical Representative with proof of weed-free equipment.
The following is considered proof of weed-free equipment:
The Contractor shall be required to clean all equipment (equipment that operates off existing roads) prior to entry on the project area. This cleaning shall remove all dirt and plant parts and material that may carry noxious weed seeds into the project area. NPS Technical Representative may request to inspect Contractor equipment. All subsequent mobilization of equipment shall be treated the same as initial mobilization.
Prior to initial mobilization, the Contractor shall make equipment available for inspection at an agreed location.
Fire Prevention All chainsaws shall be equipped with spark arrestors. Any accidental starts shall be reported immediately to TBD when working in Colorado, and to TBD when working in Utah.
Landscape and Wildlife Preservation
a) The Contractor shall confine operations to within the footprint or other areas designated in contract documents, and prevent the depositing of rocks, limbs, stumps, or other debris outside of these limits. Material which falls outside of these limits shall be retrieved, disposed of, or incorporated in the work as approved by the contracting officer and resulting modification as applicable and prior to being directed to perform work not listed in this contract.
b) Operations shall be scheduled and conducted to minimize disturbance to nesting birds, erosion of soils, silting and muddying of streams and rivers, or harm to natural habitat. Pollutants such as fuels, lubricants, raw sewage, and other harmful materials shall not be discharged into or near rivers or streams, or into natural or manmade channels leading thereto. Vehicles shall remain on designated roadways. Mechanized equipment shall not be operated in flowing water.
Visitor Accommodation and Safety Contractors shall request closure of public use areas in advance to ensure public safety. If a closure request is granted, the NPS Technical Representative shall work with the Contractor to implement the closure.
During operations, the Contractor shall designate at least one person to watch for visitors who may wander near the work zone. The Contractor is responsible for keeping the public at a safe distance.
Cultural and Natural Resource Protection If any artifacts, fossils, or human remains are discovered during contract operations, they shall be left in place, and the Contractor shall immediately notify the contracting officer and the NPS Technical Representative.
National Park Service Regulations All conduct outside of the specified contract work is subject to park rules and regulations concerning, but not limited to littering, camping, smoking, fires, wildlife harassment, collecting, and visitor safety, as specified in Title 36 of the Code of Federal Regulations. For general information on Dinosaur National Monument, including more detailed maps, visit: Dinosaur National Monument (U.S. National Park Service)
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