KNRI_257081_QA_0003.pdf
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- Solicitation number
- 140P2025R0066
About this file
This document is a Questions and Answers (Q&A) file for Solicitation #140P2025R0066 related to the Knife River Indian Village National Historic Site bank stabilization project. The Q&A addresses three key contractor inquiries: winter work conditions, riprap stone color specifications, and project performance timeline. Key details include: work is permitted during winter months with elevated weather-related risks, locally sourced riprap around Lake Sakakawea is typically gray to light brown/tan granite stone, and the project has a fixed 365-calendar day performance period from the Notice to Proceed (NTP). The National Park Service will coordinate with the contractor to identify a mutually agreeable NTP date, with specific constraints around in-water work restrictions (avoiding April 15 – June 1 annually to protect fish migration). The document also emphasizes that any further erosion of the Knife River bank after the June 18-20, 2024 existing conditions survey is considered the contractor's risk, acknowledging the river's dynamic nature.
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Text version
Number Question Answer Amendment
Will any work be allowed during the winter months?
Yes, work is permitted during the winter period; however, it carries elevated risk due to weather-related hazards. Appropriate mitigation strategies should be in place to ensure safety and continuity. 3
The specs state that the color of riprap shall be approved by the CO prior to delivery to the project site. Is there a specific color you are looking for?
Locally sourced riprap around Lake
Sakakawea in North Dakota typically consists of gray to light brown / tan stone, often granite, depending on the source quarry (and tends to reflect the geology of the region.) 3
Is there any possibility that this 365-day window could be expanded to include all of 2026
Assuming an extension is allowed, If the contractor was unable to start on the project until after the in-water work restrictions were lifted in 2026 would that be acceptable?
The period of performance for this project remains 365 calendar days from the issuance of the Notice to Proceed
(NTP). The NTP may be issued as early as acceptance of
Division 1 submittals as long as it is outside the period of in-water work restrictions. Any in-water, or near-water work should avoid the April 15 – June 1 timeframe (every year) to allow for undisturbed fish seasonal fish movement.
The National Park Service (NPS) will coordinate with the
Contractor to identify a mutually agreeable NTP date within this allowable window. Should the Contractor elect to begin work at a later date, that is acceptable provided the full scope of work can be completed within the 365-day performance period.
Please note that further erosion of the Knife River bank—including changes to channel bottom elevations or slope profiles occurring after the June 18–20, 2024 existing conditions survey—are considered part of the Contractor’s risk and will not be treated as a changed site condition. The
Knife River is inherently dynamic, and site conditions at the time of construction may differ from those documented during design. 3
KNRI 2507081 - Question and Answer - Solicitation #140P2025R0066
File details come from the government source that posted it. Updated .