SOW_-_DRAFT_1.docx

Shenandoah National Park National Park Service Meadow Run Watershed Liming

STATEMENT OF WORK - DRAFT

STATEMENT of SERVICES: The National Park Service (NPS) is anticipating award of a single service contract to apply approximately 5,250 tons of limestone sand or equally efficacious material (aka “liming”) across the Meadow Run Watershed (aka “project area”), a largely remote and inaccessible backcountry area of Shenandoah National Park (aka “the Park”). This area is difficult to access on foot; trails roughly run the perimeter of the project area. Access is impossible for wheeled vehicles as there are no roads in the project area, the majority of which is congressionally designated Wilderness.

PERFORMANCE PERIOD: The work on this contract shall be for a period of 240 days after the contract award. The field work shall be conducted only during daylight hours, Monday through Friday unless approved for weekend operations. All field work must be scheduled at least 96 hours in advance with the Contracting Officer’s Representative (COR). Contractor shall not deviate from the Monday through Friday without receiving written concurrence from the COR.

Background

Meadow Run is a stream located in the South District of Shenandoah National Park (the park). The stream’s watershed is underlain by silica-rich bedrock. Soils that form on this type of bedrock have limited capacity to neutralize acidic deposition. The resulting acidic groundwater within these soils eventually flows into the tributaries of Meadow Run, affecting its water quality. Consequently, some fish species, including brook trout, many insect species, and other aquatic organisms struggle to survive in Meadow Run. Because low pH is affecting Meadow Run’s aquatic life, the Virginia Department of Environmental Quality (VADEQ) formally lists the stream as impaired waters under Section 303(d) of the Clean Water Act. Acidification also adversely affects songbird, plant, and forest health. Degraded ecosystem health in turn diminishes the visitor experience.

Meadow Run is the most acidified stream in the park, has a 30-year history of scientific research on acid rain effects and is the ideal size for a restoration effort. The ecosystem restoration project area covers 2,150 acres of the park’s 199,234 acres, including approximately 1,700 acres of congressionally designated wilderness. Because of the watershed’s underlying bedrock geology, the soil and stream cannot recover naturally to pre-pollution conditions for well over 100 years in the current climate. The effects of climate change, with potentially higher average temperatures and more extreme storms is expected to exert additional acidification impacts over time, increasing leaching and loss of soil elements, driving higher stream flows, and producing more intense episodic acidification events. To restore the ecosystem function and improve its resilience to climate change, approximately 5,250 tons of limestone sand will be applied via helicopter in the project area to replace elements lost from soils due to acidification and increase the acid neutralizing capacity (ANC) in the stream.

Improvements to the watershed should be observable within a year and are expected to have beneficial impacts on soils for well over 100 years. Liming will reduce soil acidity and toxic aluminum. The pH in the stream is expected to increase above 6.0, allowing Meadow Run to be removed from VADEQ’s list for Impaired Water and thereby meeting requirement under federal law to develop and implement a mitigation plan.

The Environmental Assessment for this project was completed in January 2021. A Finding of No Significant Impact was issued in April 2021.

Project Activities

1. The NPS will provide limited staging along Skyline Drive. The contractor is responsible for acquiring any additional off-park staging needed to complete operations and manage project risk.

2. The NPS will make all necessary park closures for the project area, at staging areas, and along Skyline Drive as coordinated between the NPS and the contractor. The contractor is responsible for safety and controlling access immediately around operations in and around staging areas.

3. The NPS will parcel the project area, set the dosage for each parcel, and prioritize them for treatment.

4. The contractor is responsible for acquiring limestone sands, calibrating treatment method, managing logistics, completing the treatment, providing treatment documentation to the NPS, and returning staging areas to pre-operation conditions.

5. The contractor will turn in all project documentation and a final report.

Pricing

Instructions for submitting Pricing is in the Solicitation.

STATEMENT OF WORK:

Definition of Meadow Run Project Area The Meadow Run Project Area has been broken into 46 parcels as defined by the shapefile [name] accompanying this Statement of Work; shown in the map below, Figure 1; and listed in Table 1, below, along with the initial prioritized liming order, parcel size in acres, and target liming dose. Areas within the project area that will be excluded form liming (aka “exclusion zones”) are also identified in the map below and defined by the shapefile [name] accompanying this Statement of Work. The NPS may adjust the prioritization of the parcels and split parcels as needed to administer this contract.

Figure 1: Meadow Run Liming Parcels and Exclusion Zones

(tons/acre)

Table 1: Meadow Run Liming Parcels

A. Base Activity: Liming Operations Winter 2024-2025 This activity is to lime parcels A-01 through A-06 and B-01 through B-03 of the Project Area, as defined above.

Liming operations in Meadow Run will be in line with the Meadow Run Environmental Assessment as stipulated in the Finding of No Significant Impact. The contractor shall comply with and meet all relevant requirements under all applicable laws and regulation, including the Superintendent’s Compendium, while executing the liming operations.

1.0 Post Award Project Meeting and Work Plan

1.1 Post Award Project Meeting and Site Visit

Contractor is required to attend a Post Award Meeting. Contractor and all principal team members shall meet with NPS representatives to clarify task, review the Contractor’s proposal (including: the work plan, safety plan, treatment verification plan, and schedule), discuss safety planning, logistics, and schedule. An in-person Site Visit is required to orient the Contractor to the liming site and staging areas along Skyline Drive, and the NPS to any off-park staging. Both activities may be conducted on consecutive days.

1.2 Work Plan

Based on the outcome of the Post Award Meeting and Site Visit, the Contractor shall refine their proposal and submit a Draft Work Plan for review by NPS representatives within 21 calendar days of completing the Post Award Meeting. After NPS review, the Contractor shall incorporate all NPS comments and edits for acceptance by NPS representatives within 7 calendar days of review. Refinements will remain within scope of this Statement of Work and should not alter the contract award value. The work plan shall include:

1. A detailed description of the liming process, including:

a. The sequence of steps or events for the project

b. The personnel positions required to execute the work plan

c. The equipment required to execute the work plan, and how it will be maintained

d. The liming product to be applied to the Project Area including the guaranteed screen analysis from the quarry(ies)

e. How the contractor will communicate with the NPS

f. How the contractor will address requirements outlined here in the SOW

2. A detailed Treatment Verification Plan describing how the liming equipment will be calibrated, operated, and monitored for correct liming dose, and how the liming application will be recorded, and verified for each parcel.

3. A detailed safety plan describing how their work will be conducted in compliance with all local, state, and federal required safety standards. In particular, the plan will address:

a. How the Contractor will manage controlling access immediately around operations around staging areas and steps to take in the event people do enter the site, both planned (ex: scheduled NPS project staff and deliveries from subcontractors) and unplanned (ex: public entering the closure area)

b. Go/No-Go criteria for conducting liming operations

c. Equipment refueling

d. Site modifications needed in staging areas for safe liming operations (ex: needed vegetation removal or special equipment temporarily installed on site)

e. Steps to take in the event of a mishap or accident.

4. A detailed project schedule showing a target timeline for executing the work plan and liming the entire project area, taking into account inclement weather days, Skyline Drive closures due to winter storms with subsequent clearing, and otherwise manages risk of project completion.

5. A Risk Management Plan identifying, assessing, and outlining any mitigation for performance, schedule, safety, and any other project risks.

2.0 Liming Operations

2.1 Overview

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2.2 Logistics

The Contractor will adhere to the following logistical considerations for planning and during operations.

2.2.1 Project Area

The project area is difficult to access on foot. Three trails, in part, are located within the project area: Riprap Trail, Wildcat Ridge Trail, and the Appalachian Trail. There are no roads in the project area. Much of the project area consists of steep terrain and Congressionally designated Wilderness. Wheeled vehicles are prohibited within the project area. Building new roads, trails, or other infrastructure is prohibited. Improving existing trails is prohibited. Ground disturbance in the project area is prohibited without explicit written permission from the CO or COR.

The NPS will close the Project Area to all public visitor use for the duration.

2.2.2 Staging Areas

The Government will provide up to four staging areas for use by the contractor along Skyline Drive. Liming material may only be piled in as many as three of these. The Contractor will choose from the areas listed below in Table 2 and annotated on the map, Figure 2. The size of each location shown reflects site restrictions in this SOW. The contractor is not required to use these areas exclusively or at all. Off-park staging should be located in the polygon to the west of the project area as annotated on the map. The contractor is responsible for securing any off-park staging.

(sq ft) Additional Site Restrictions

Table 2: Possible Staging Areas Along Skyline Drive

Figure 2: Meadow Run Possible Staging Areas

2.2.2.1 Access

The Contractor will have access to the desired staging areas along Skyline Drive from 01 November 2024 through 21 March 2025 or passing final inspection, whichever is earlier. In the event of winter storms and any associated storm damage, Skyline Drive will be closed, and the Contractor will not have access to these areas until the NPS has completed road clearing operations.

The NPS will close staging areas to all public visitor use for the duration. The NPS will close portions of Skyline Drive to all use, as needed, to accommodate liming operations. The contractor is responsible for safety and controlling access immediately around operations in and around staging areas.

The NPS will periodically access staging areas, both on and off the park, to meet with the contractor, provide requisite support for the project, and ensure compliance with this Statement of Work.

2.2.2.2 Site Management

The contractor will take measures to protect pavement and soil from the limestone sand in and around all staging areas. A waterproof barrier will go down first with construction matting made of rubber or plywood placed on top of that. Limestone sand can be stockpiled on the construction matting and will be covered with a waterproof barrier. The stockpiles will be surrounded with erosion control.

The contractor will comply with and meet all relevant requirements under the Clean Water Act, including management of stormwater-related non-point source pollutants under the National Pollutant Discharge Elimination System. The contractor will implement best management practices for drainage and sediment erosion control (e.g., VADCR 2020) at staging areas to prevent or reduce non-point source runoff and minimize soil loss from the limestone sand stockpile and any unpaved surfaces. The contractor will inspect and clean out erosion control structures periodically and remove them only after staging areas are fully restored.

The contractor will follow a refueling and maintenance plan designed to prevent potential contamination of surface waters and groundwater caused by accidental spills for all equipment and vehicles. The refueling and maintenance plan will be identified in the Work Plan.

Tracked vehicles and equipment are prohibited in park staging areas and on Skyline Drive. All sand and equipment will stay a minimum of 12’ from the stone walls and curbs at all times. Sand is prohibited on Skyline Drive.

The contractor may use Skyline Drive to maneuver equipment and vehicles (for example, loading and unloading trailered equipment). However, Skyline Drive must remain passable for emergency traffic at all times.

2.2.2.3 Vegetation

The contractor will not disturb any vegetation, alive or dead, within the Park unless otherwise allowed in this SOW. The government may remove vegetation at staging areas along Skyline Drive deemed a safety issue and requested in writing by the contractor. Live trees will not be removed. The contractor may use mowed grassy areas immediately adjacent to the pavement to maneuver equipment and vehicles except where there is a noted prohibition in Table 2, above.

The contractor will take measures to prevent or minimize the establishment and spread of non-native invasive plants, noxious weeds, and the spread of diseases through the measures outlined in the Meadow Run Environmental Assessment. Staging areas and the land within 100 yards of the staging areas, both on and off the park, should be reasonably free of invasive plants and their seed. The NPS will treat the staging areas along Skyline drive before 01 November 2024. The contractor is responsible for management of plants and seed on any off park staging. The government reserves the right to periodically inspect off park staging to ensure compliance with this SOW.

2.2.2.4 Food Storage, Refuse, and Sanitation

The Contractor shall comply with and meet all relevant requirements under all applicable laws and regulations, including the Superintendent’s Compendium, regarding Food Storage, Refuse, and Sanitation. The Contractor must make their own arrangements to comply.

2.2.3 Limestone Product

2.2.3.1 Composition

The Contractor will use Dolomitic Limestone as a sand product or American Association of State Highway and Transportation Officials (AASHTO) #10 aggregate product or another equally efficacious material, as identified in the approved Work Plan.

2.2.3.2 Delivery from the Quarry

The Contractor is responsible for limestone sand acquisition and delivery. Upon arrival, sands will be stored as outlined above.

The contractor will adhere to the maximum loads on Skyline Drive as stipulated by the Superintendent’s Compendium: 40,000 pounds from May through November and 20,000 pounds from December through April.

The Contractor will submit proof of purchase and delivery as part of the final project report and documentation.

2.3 Operations

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2.3.1 Dates

Liming Operations shall be conducted during daylight hours on weekdays, Monday through Friday, from 02 December 2024 through 28 February 2025. Operations will not occur on government holidays unless approved by the government. Weekend operations may be approved by the government should it become necessary. Sunday and holiday operations will be conducted exclusively within the park’s boundaries and will necessitate the use of staging along Skyline Drive. All operations must be scheduled at least 96 hours in advance with the COR. Contractor shall not conduct weekend or holiday operations without receiving written concurrence from the COR.

2.3.2 Lime Application

The Contractor will lime each parcel to the dose identified in Table 1. The total applied limestone sands will be +5 tons/-1 ton of the total limestone sand required to lime each parcel based on its acreage, also in Table 1, measured and calculated per parcel.

Lime will be applied in a systematic and uniform manner across each parcel following the approved Treatment Verification Plan from the Work Plan. The Contractor will pay special attention to airborne drift and make an effort to minimize it during application. Applying limestone sands outside of the identified parcels is prohibited, i.e. outside of the project area or within an identified Exclusion Zone.

2.4 Communications

The complexity of this project requires regular, recurring, and timely communication between the Contractor and NPS. The Contractor shall attend all meetings and submit all information as outlined below. The Contractor can plan to receive timely Skyline Drive status information from the NPS as outlined below. The Contractor will make arrangements to manage internal communications during the Liming Operations and contact the NPS in case of emergency as also outlined below.

2.4.1 Weekly Project Meeting

The Contractor shall meet with the NPS weekly to review project progress against the work plan, seek any clarification on any point, and relay any necessary information. The meeting may be held via virtual teleconference. Most meetings should not last more than 1 hour. Weekly Project Meetings will commence the week following the Post Award Project meeting and continue through the acceptance of the Final Report.

2.4.2 Four-Day Outlook Notification

The Contractor will notify the COR in writing not less than 96 hours in advance of their intent to commence liming operations on a date so the NPS can make arrangements to manage necessary closures and post alerts. The contractor will notify the COR of their intent to suspend planned operations (for example, winter storms are forecasted or equipment needs maintenance) as soon as known so the NPS can forego or lift unnecessary closures.

The Four-Day Outlook may be contained in the Daily Planning Brief or Debrief for days the contractor is conducting liming operations. There are otherwise no restrictions as to date or time the contractor may send notification to the COR. The contractor may opt to file notice in advance of the 96 hours in lieu of doing so on weekends and holidays.

2.4.3 Status of Skyline Drive Notification

The NPS will provide notification to the Contractor of the status of Skyline Drive, confirming needed closures for liming operations and alerting them to closures and restricted use as a result of winter weather and road conditions. This notification may come from a mass messaging platform such as Everbridge.

The Contractor will adhere to Skyline Drive closures and use restrictions.

2.4.4 Daily Planning Brief

The Contractor will provide the COR with a Daily Planning Brief every day before liming operations begin.

The Planning Brief will be a short, written communication and accompanied by an in-person meeting or virtual teleconference with the COR. The COR will have opportunity to seek clarification on any point and relay necessary information to the contractor. The meeting should last no more than twenty minutes.

This brief will contain: planned start and stop times, parcels identified for liming, any logistics notes, and any safety messaging.

2.4.5 Communication on Active Liming Operations

The Contractors may choose any standard communication methods that works for their operations. Cell coverage is not reliable throughout most areas of Shenandoah National Park, however, it may be available at overlooks around the project area and available staging areas depending on your carrier(s). In case of emergency, the contractor must be able to contact the Park Communications Center via radio on the Park’s frequencies. These communication plans will be detailed in the Work Plan.

2.4.6 Daily Debrief

The Contractor will provide the COR with a Daily Debrief every day at the conclusion of liming operations.

The Debrief will be a short, written communication and accompanied by an in-person meeting or virtual teleconference with the COR. The COR will have opportunity to seek clarification on any point and relay necessary information to the contractor. The meeting should last no more than twenty minutes.

This brief will contain: the day’s progress in liming the parcels, obstacles encountered, opportunities ahead, changes to plans for the next three days, and progress against the project schedule from the approved Work Plan.

2.4.7 Incremental Data Delivery

The Contractor will incrementally deliver the record of liming as outlined in the approved Treatment Verification Plan from the Work Plan by close of business (COB) the next workday after the liming is accomplished. This may consist of load slips from limestone delivery and a GIS shapefile showing when, where, and how much limestone sand was dispersed.

2.5 Restoration and Cleanup

Once liming operations are complete, the Contractor has 30 working days to complete restoration work, clean-up, and request an inspection. Restoration that requires weather conditions outside of this window can be accomplished and inspected separately at a later date with written permission from the CO.

The Contractor will restore all staging areas along Skyline Drive, paved and unpaved, disturbed during project implementation to pre-implementation conditions. All plant species and materials (e.g., rolled erosion control products) used for revegetation must be approved by the NPS and any replanting and reseeding will be done within the optimal growing season. Any asphalt and stonework restoration must be coordinated with the NPS. Restoration of staging areas off the park are subject to the contractor’s negotiated terms of use.

The Contractor will complete the following cleaning operations before requesting final inspection:

1. Remove tools, construction equipment, machinery, and surplus material from Project site.

2. Clean staging areas and surrounding landscape of rubbish, waste material, litter, and other foreign substances.

3. Remove petrochemical spills, stains, and other foreign deposits.

4. Sweep paved areas broom clean. Rake grounds that are neither planted nor paved to smooth, even-textured surface, as directed by the NPS.

Final cleaning and waste removal operations will comply with local laws and ordinances and Federal and local environmental and antipollution regulations.

2.6 Final Inspection of Staging Areas

The NPS, upon written notification by the contractor that they are ready for a final inspection, will conduct a final inspection of the staging areas. The NPS will proceed with inspection on an agreed upon date upon receipt of written request.

If staging area restoration and cleanup is not determined complete following final inspection, the NPS will notify the Contractor in writing. The Contractor shall request a new final inspection after completing work.

3.0 Documentation and Final Report

The Contractor shall submit a brief Draft Final Report and Documentation Package for review by NPS representatives within 28 calendar days of completing the Final Inspection. After NPS review, the Contractor shall incorporate al NPS comments and edits for acceptance by NPS representatives within 14 calendar days of review.

The Final Report shall include:

1. A description of the work completed

2. An analysis of the dose delivered in each parcel against the method outlined in the Treatment Verification Plan

3. A comparison of the project schedule and target timeline to the actual completion schedule

4. Obstacles and risks encountered during the work and how they were managed

5. Any safety issues and incidents and how they were addressed

6. Recommendations for process improvement for future similar projects

The Documentation Package shall include:

1. Evidence of limestone acquisition; this may include copies of all invoices and load slips from liming material

2. Data collected and created as part of the Treatment Verification Plan; this may include equipment instrumentation and GIS data, as well as a clean library containing data included in the Incremental Data Delivery

3. Still photography and videography of liming operation for use by the government, including: 100 still images and 10 videos, each 2-10 minutes in length; a minimum of 25% of the content should be from the perspective of the application crew(s), a novel perspective of the application, and/or close up of their same work.

Deliverables

B. Optional Activities: Liming Additional Acreage The NPS may decide to lime additional acreage during the Base Activity: Liming Operations Winter 2024-2025, as described above, and/or during the Optional Activity: Liming Operations Winter 2025-2026, as described below. This activity is to lime up to an additional 1,590 acres of the Project Area. The NPS will determine which parcels, or sub-parcels if an entire parcel is not [ordered], will be limed and will identify them in a contract modification. Each acre will be limed to the dose of the corresponding parcel where it is located, as described in Table 1.

All of this optional activity will generally be combined with the effort of Base Activity: Liming Operations Winter 2024-2025, as described above, and/or during the Optional Activity: Liming Operations Winter 2025-2026, as described below, as it applies to planning, operations, and documentation. Specific requirements are below.

1.0 Project Meeting and Work Plan

1.1 Project Meeting

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1.2 Work Plan

The Contractor will revise the Work Plan as necessary as additional acreage is [ordered] and the parcel(s) and/or sub-parcels are identified by the NPS. In particular, this will require revising the project schedule. The revised work plan will be submitted to the NPS for review and approval within 7 calendar days of a Notice to Proceed.

2.0 Liming Operations

2.1 Overview

2.2 Logistics

All logistical considerations will coincide with the effort of Base Activity: Liming Operations Winter 2024-2025, as described above, and/or during the Optional Activity: Liming Operations Winter 2025-2026, as described below. There should be minimal, if any, additional effort required as a result of liming additional acreage.

2.2.1 Project Area

No change from A, Base Activity, 2.2.1.

2.2.2 Staging Areas

No change from A, Base Activity, 2.2.2, including sub-sections. The Contractor will use the staging areas already in use and no additional sites along Skyline Drive.

2.2.3 Limestone Product

No change from A, Base Activity, 2.2.3, including sub-sections.

2.3 Operations

2.3.1 Dates

No change from A, Base Activity, 2.3.1.

2.3.2 Lime Application

The Contractor will lime each additional acre to the dose of the corresponding parcel or sub-parcel where it is located, as described in Table 1. The total applied limestone sands will be +5 tons/-1 ton of the total limestone sand required to lime each identified parcel or sub-parcel based on the [ordered] acreage, measured and calculated per parcel or sub parcel.

Lime will be applied in a systematic and uniform manner across each parcel or sub-parcel following the approved Treatment Verification Plan from the Work Plan. The Contractor will pay special attention to airborne drift and make an effort to minimize it during application. Applying limestone sands outside of the identified parcels or sub-parcels is prohibited, i.e. outside of the project area or within an identified Exclusion Zone.

2.4 Communications

Communications for this additional activity will continue seamlessly from the effort of Base Activity: Liming Operations Winter 2024-2025, as described above, and/or during the Optional Activity: Liming Operations Winter 2025-2026, as described below.

2.4.1 Weekly Project Meeting

No change from A, Base Activity, 2.4.1. Weekly Project Meetings will continue between the completion of Base Activity parcels and commencing Restoration and Cleanup activities.

2.4.2 Four-Day Outlook Notification

No change from A, Base Activity, 2.4.2. The Contractor will make Four-Day Outlook Notifications for all Additional Acreage.

2.4.3 Status of Skyline Drive Notification

No change from A, Base Activity, 2.4.3.

2.4.4 Daily Planning Brief

No change from A, Base Activity, 2.4.4. The Contractor will make Daily Planning Briefs for all Additional Acreage operations.

2.4.5 Communication on Active Liming Operations

No change from A, Base Activity, 2.4.5.

2.4.6 Daily Debrief

No change from A, Base Activity, 2.4.6. The Contractor will make Daily Debriefs for all Additional Acreage operations.

2.4.7 Incremental Data Delivery

No change from A, Base Activity, 2.4.7. The Contractor will deliver the record of liming for all Additional Acreage.

2.5 Restoration and Cleanup

Restoration and Cleanup efforts will coincide with the effort of Base Activity: Liming Operations Winter 2024-2025, as described above, and/or during the Optional Activity: Liming Operations Winter 2025-2026, as described below. There should be minimal, if any, additional effort required to complete Restoration and Cleanup efforts already underway as a result of liming additional acreage. No change from A, Base Activity, 2.5.

2.6 Final Inspection of Staging Areas

There will be no separate Inspection of Staging Areas. Inspections will be conducted as part of the Base Activity: Liming Operations Winter 2024-2025, as described above, and/or during the Optional Activity: Liming Operations Winter 2025-2026, as described below.

3.0 Documentation and Final Report

There will be no separate Documentation Package and Final Report.

The Final Report prepared as part of the Base Activity: Liming Operations Winter 2024-2025, as described above, and/or during the Optional Activity: Liming Operations Winter 2025-2026, as described below, will include content addressing all Additional Acreage limed, by parcel and/or sub-parcel where appropriate, in each of the 6 content areas outlined under A, Base Activity, 3.0.

All documentation from liming additional acreage will be included in the Documentation Package prepared as part of the Base Activity: Liming Operations Winter 2024-2025, as described above, and/or during the Optional Activity: Liming Operations Winter 2025-2026, as described below, with the following clarification:

1. Evidence of Limestone acquisition will be included for all additional limestone

2. Data collected and created as part of the Treatment Verification Plan will be included for all additional acreage, referenced by parcel or sub-parcel.

3. No additional photography or videography beyond the 100 still images and 10 videos is required. The images and videos submitted as part of the Documentation Package may, however, contain content from liming the additional acreage.

Deliverables

C. Optional Activity: Liming Operations Winter 2025-2026 The NPS may decide to resume liming operations the winter following the original effort. This activity is to lime 130 acres of the Project Area with a dose of 2.25 tons/acre. The NPS will determine which parcels or sub-parcels will be limed and will identify them in a contract modification. Optional activities may or may not be needed.

Liming operations in Meadow Run will be in line with the Meadow Run Environmental Assessment as stipulated in the Finding of No Significant Impact. The contractor shall comply with and meet all relevant requirements under all applicable laws and regulation, including the Superintendent’s Compendium, while executing the liming operations.

1.0 Redeployment Project Meeting and Work Plan

1.1 Redeployment Project Meeting

The Contractor will attend a redeployment project meeting within 45 days from issuance of the contract modification with this option. All Contractor principal team members shall meet virtually or in-person with NPS representatives to review the Contractor’s Proposal for this activity and Work Plan, as delivered, from the Base Effort along with the lessons learned and recommendations for process improvement from the Final Report, as delivered, from the Base Effort.

1.2 Work Plan

The Contractor will refine their proposed work plan based on the outcome of the redeployment project meeting and submit it for review and acceptance by NPS representatives within 21 calendar days of completing the redeployment project meeting. Refinements will remain within the scope of this Statement of Work and should not alter the contract award value.

2.0 Liming Operations

2.1 Overview

2.2 Logistics

The Contractor will adhere to the following logistical considerations for planning and during operations.

2.2.1 Project Area

No change from A, Base Activity, 2.2.1.

2.2.2 Staging Areas

No change from A, Base Activity, 2.2.2. Dates for this optional activity are below. The NPS may consider the use of other staging areas in answer to lessons learned from the Base Activity. Otherwise, the Contractor should use the staging areas along Skyline Drive previously used.

2.2.2.1 Access

The Contractor will have access to the desired staging areas along Skyline Drive from 03 November 2025 through 20 March 2026 or passing final inspection, whichever is earlier. No further change from A, Base Activity, 2.2.2.1.

2.2.2.2 Site Management

No change from A, Base Activity, 2.2.2.2.

2.2.2.3 Vegetation

The NPS will treat the staging areas along Skyline drive before 31 October 2025. No further change from A, Base Activity, 2.2.2.3.

2.2.2.4 Food Storage, Refuse, and Sanitation

No change from A, Base Activity, 2.2.2.4.

2.2.3 Limestone Product

No change from A, Base Activity, 2.2.3, including sub-sections.

2.3 Operations

2.3.1 Dates

Liming Operations shall be conducted during daylight hours on weekdays, Monday through Friday, from 01 December 2025 through 28 February 2026. Otherwise, no change from A, Base Activity, 2.3.1.

2.3.2 Lime Application

The Contractor will lime each parcel or sub-parcel with a dose of 2.25 tons/acre. The total applied limestone sands will be +5 tons/-1 ton of the total limestone sand required to lime each parcel or sub-parcel based on its acreage, measured and calculated per parcel or sub-parcel.

Lime will be applied in a systematic and uniform manner across each parcel following the approved Treatment Verification Plan from the Work Plan. The Contractor will pay special attention to airborne drift and make an effort to minimize it during application. Applying limestone sands outside of the identified parcels is prohibited, i.e. outside of the project area or within an identified Exclusion Zone.

2.4 Communications

No change from A, Base Activity, 2.4, including sub-sections unless detailed in the approved Work Plan based on lessons learned from Base Activity.

2.5 Restoration and Cleanup

No change from A, Base Activity, 2.5.

2.6 Final Inspection of Staging Areas

No change from A, Base Activity, 2.6.

3.0 Documentation and Final Report

The Contractor shall submit a brief Draft Final Report and Documentation Package for review by NPS representatives within 28 calendar days of completing the Final Inspection. After NPS review, the Contractor shall incorporate al NPS comments and edits for acceptance by NPS representatives within 14 calendar days of review.

The final report shall include:

1. A description of the work completed

2. An analysis of the dose delivery in each parcel against the method outlined in the Treatment Verification Plan

3. A comparison of the project schedule and target timeline to the actual completion schedule

4. Obstacles and risks encountered during the work and how they were managed

5. Any safety issues and incidents and how they were addressed

6. Results of any attempted process improvements

7. Recommendations for further process improvement for future similar projects

The contractor shall submit the following documentation associated with the project:

1. Evidence of limestone acquisition; this may include copies of all invoices and load slips from liming material

2. Data collected and created as part of the Treatment Verification Plan; this may include equipment instrumentation and GIS data, as well as a clean library containing data included in the Incremental Data Delivery

3. Still photography and videography of liming operation for use by the government, including: 100 still images and 10 videos, each 2-10 minutes in length; a minimum of 25% of the content should be from the perspective of the application crew(s), a novel perspective of the application, and/or close up of their same work.

Deliverables

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