Z--ZION- Crawford Dam Removal and Diversion

Amendment / Modification

This amendment (0001) to Solicitation 140P6426B0008, dated 05/08/2026, is effective 06/02/2026.

• The purpose of this amendment is to post the questions and technical answers received after the site visit.
• All other aspects of the solicitation remain the same.

This amendment does not explicitly state which sections of the original solicitation are affected, but it provides responses to questions and technical answers.

• Offerors must acknowledge this amendment on the SF1442 or submit a signed SF30 with their bid package.
• Failure to acknowledge may result in rejection of the offer.

Questions & Answers / Clarifications

This document provides responses to questions submitted by potential bidders regarding the Crawford Dam Removal Project (Solicitation #: 140P6426B0004, Amendment #01).

• Tree Removal: The NPS will remove certain mapped trees. Contractors may need to remove up to five additional trees (up to 100' tall), with the exact number dependent on the contractor's chosen methods. Additional trees require CO approval two weeks prior to removal. Wildlife monitoring is required.
• SWPPP: A Storm Water Pollution Prevention Plan (SWPPP) is required as the project is over 1 acre. This is the contractor's responsibility.
• Erosion Control: Contractors must account for silt fencing and erosion control measures, as detailed in the Design Drawings (Sheets C2, C3, C4).
• Personnel: The QC Manager must be separate from the Superintendent. The SSHO can be combined with another position, but the NPS prefers them to be separate.
• Performance Period: The period of performance is inclusive of lead times.
• Site Visit: The site visit attendee sign-in sheet is attached.
• Hazardous Materials: Historic records do not indicate the presence of lead or asbestos.
• Phasing: Project activities should be arranged by phase on the construction schedule per Specification 01 31 16.
• Tax Exemption: The Contracting Officer (CO) will provide an exemption document for project-related materials/equipment.
• Work Start: On-site work is anticipated to begin in September, with award in August.
• Third-Party Inspections: While the contractor must submit a quality control plan and have an independent QC Manager, the NPS did not specify third-party inspections.
• Permitting: Permitting is required, as detailed in Specification 01 31 00 Section 1.8.
• Soil Borings: No soil boring reports are available; contractors should expect rocks and obstructions, particularly for the new irrigation pipe alignment.
• Water Source: The park can sell water at $10.50/1,000 gallons. Contractors interested must be set up as a GOV Vendor. A meter and backflow prevention valve will be provided.
• Landscaping: Required landscaping restoration includes regrading temporary access roads and staging areas to pre-construction conditions, removing non-native material, and scarifying soils. NPS will revegetate the site after contract completion.
• Power: There is no operational power on site.
• Archaeological Monitoring: The NPS will provide an archaeological monitor as needed and acquire necessary permits for investigations.
• Materials Removal: All fill brought in for access roads and staging areas must be removed, and these areas regraded to pre-construction condition.
• Boulders: The government will not supply boulders, but contractors are encouraged to recycle on-site sandstone boulders not contributing to embankment stabilization.
• Tree Trimming: Trees around access roads may be trimmed per Design Drawing Sub Sheet C1, with CO approval and wildlife monitoring.
• Disturbance Limits: Refer to Design Drawing Sub Sheet C1 for disturbance limits on the east side of the river.
• ABS Smart Pipe: The ABS Smart Ditch is expected to perform well, but contractors can suggest equivalent materials.
• Control Points: The contractor is responsible for establishing control points; survey benchmarks are available nearby.
• Erosion Control: Erosion control materials must be 100% biodegradable and natural (e.g., poly jute), with large diameter netting to prevent wildlife entrapment. Photodegradable or synthetic netting is prohibited.

These Q&As clarify requirements related to environmental controls, personnel, site conditions, materials, and restoration, which may impact bidder planning and cost estimation. No changes to submission deadlines or evaluation factors were noted.

Form / Attachment / Pricing Sheet

This document is an Excel spreadsheet template for reporting on the "Limitations on Subcontracting" clause, specifically for "Construction by Special Trade Contractors." It is used to track amounts paid to the prime contractor, similarly situated subcontractors (SSS), and non-similarly situated subcontractors (NSS) during a performance period.

• Contract Number (PIID): P6426B0008
• Type of Set Aside: Total Small Business
• Type of Service: General construction
• Performance Period for This Report: 180 days after issuance of NTP
• Total Amount Paid by the Government to the Prime: (Field to be filled)
• Total Amount Paid to SSS: (Fields to be filled for each SSS)
• Total Amount Paid to NSS: (Fields to be filled for each NSS)
• Limitation on Subcontracting Percentage: Calculated based on the above figures.
• Compliance Note: The template includes a note reminding users that for Construction by Special Trade Contractors, the percentage of the amount paid to SSS must be 75% or lower to comply with FAR clause 52.219-14. If the calculated value is 75% or higher, the prime contractor is not meeting the threshold.

This template is crucial for bidders to understand the subcontracting requirements for this "Total Small Business" set-aside opportunity in general construction. Bidders must be aware of the 75% subcontracting limitation for construction by special trade contractors and how to track and report payments to subcontractors to ensure compliance. The template provides the structure for this reporting, which will likely be required during contract performance.

Specifications / Other

This document, titled "ZION NATIONAL PARK CRAWFORD DAM REMOVAL AND DIVERSION HEADGATE REPLACEMENT PROJECT SPECIFICATIONS," dated March 2026, outlines the technical specifications for the project. It details various aspects of the construction, including general requirements, site work, concrete, metals, mechanical components, earthwork, exterior improvements, and specific procedures for contract modifications, definition of contract line items, construction surveying, project management and coordination, construction schedules, photo documentation, submittal procedures, archeological protection, safety requirements, quality requirements, reference standards, temporary facilities, traffic control, tree retention and protection, temporary storm water pollution prevention, product requirements, concrete formwork, concrete reinforcement, concrete, miscellaneous metal work, fabricated grating, headgates, earthwork and trenching materials, watering, finish grading, rock ramp and rip rap placement, canal liner placement, and site signage.

• Section 01 11 00 - Summary of Work: Provides an overview of the work covered, project location (Zion National Park), and the period of performance (180 calendar days from Notice to Proceed). It specifies that no in-water work is permitted between April 1 and July 31 to protect fish, and the work must be completed by April 1, 2027.
• Section 01 27 00 - Definition of Contract Line Items: Details various contract line items, including mobilization, temporary access road construction, clearing and grubbing, temporary fencing, traffic control, site dewatering and diversion, existing structure removal (dam, headgate, manhole, turnout box), CMP pipe removal and restoration, diversion pipe installation, new concrete headgate and fish screen structure construction, channel grading, rock ramp construction, riprap embankment stabilization, site restoration, and smart ditch irrigation ditch liner installation.
• Section 01 35 13.22 - Archeological Protection: Outlines requirements for protecting archeological resources, including the need for an Archeological Monitor and procedures for handling discoveries.
• Section 01 57 23 - Temporary Storm Water Pollution Prevention: Details requirements for preventing pollution from construction activities, including the development and implementation of a Stormwater Pollution Prevention Plan (SWPPP) or Under-An-Acre Pollution Prevention Plan (UPPP).
• Section 03 03 00 - Concrete: Specifies requirements for cast-in-place concrete, including mix designs, proportioning, materials, placement, curing, and testing.

This document is crucial for bidders as it defines the scope of work, technical requirements, materials, and procedures for the Crawford Dam Removal and Diversion Headgate Replacement Project. It provides detailed specifications for all aspects of the construction, which are essential for developing accurate bids and understanding project execution requirements. Bidders should pay close attention to sections related to demolition, earthwork, concrete, site restoration, environmental protection, and specific construction line items to fully grasp the project's demands.

Solicitation / RFP / RFQ

This solicitation is for the Crawford Dam Removal project at Zion National Park in southwest Utah. The project involves the partial removal and disposal of an existing concrete dam and headgate structure, regrading of the North Fork Virgin River, construction of a new intake structure with a fish screen, removal and disposal of existing pipe and a concrete manhole, installation of new pipe, removal of a concrete turnout box, reseating of an existing flume, installation of boulder embankment rip rap, and installation of smart ditch.

• Partial removal and disposal of existing concrete dam and headgate structure.

• Regrading of the North Fork Virgin River (approx. 300 feet).

• Construction of a new intake structure with a fish screen.

• Removal and disposal of approx. 275' of existing CMP pipe and concrete manhole.

• Installation of approx. 285' of 18"Ø ADS N-12 pipe.

• Removal of a concrete turnout box.

• Reseating of an existing 12" flume.

• Installation of approx. 150 feet of boulder embankment rip rap.

• Installation of approx. 350' of smart ditch.

• Contract Type: Firm-fixed-price contract.

• Project Magnitude: Between $1,000,000 and $5,000,000.

• Performance Period: Contractor shall begin performance within 10 calendar days after award and complete within 180 calendar days after receiving notice to proceed.

• Bid Opening Date/Time: Wednesday, 8 July 2026 @ 12:00 PM ET (Virtual).

• Offer Due Date: Must be received no later than the date and time noted in Block 13a of the SF1442.

• Submission Method: Bids must be submitted electronically via email.

• Bid Guarantee: Required, 20 percent of the bid price, not to exceed $3M.

• Questions: Accepted in writing via email to christopher_bauer@nps.gov, no later than 3 calendar days following the organized site visit.

• Site Visit: Scheduled for 20 May 2026 at 9:00 AM MT at Zion National Park (Zion Maintenance Yard).

• This project is set aside 100% for Total Small Businesses.

• NAICS Code: 237990 with a size standard of $45 million.

• Offerors must be registered in the System for Award Management (SAM) and be considered a small business.

• The contracting office will not provide hardcopies or email copies of the solicitation.

• Bidders are urged to inspect the site where the work will be performed.

• Construction Wage Rate Requirements for Washington County, UT will apply.

Form / Attachment / Pricing Sheet

This document is a General Decision Number (GDN) for highway construction projects in Washington County, Utah. It specifies the prevailing wage rates and fringe benefits that must be paid to various laborers and mechanics employed on federal or federally funded construction projects in that area, as required by the Davis-Bacon Act.

• General Decision Number: UT20260110 (effective 01/02/2026)
• Superseded Number: UT20250110
• Location: Washington County, Utah
• Construction Type: Highway
• Classifications and Rates: Lists specific job classifications (e.g., Carpenter, Electrician, Laborer, Operator, Truck Driver) along with their corresponding hourly wage rates and fringe benefits.
• Executive Order Notes: Includes information on Executive Order (EO) 13706 (Paid Sick Leave) and EO 13658 (Federal Contractor Minimum Wage), outlining contractor obligations.
• Appeals Process: Details the procedure for appealing wage determination decisions.

Bidders must use this wage determination to accurately calculate labor costs for their proposals on relevant federal or federally funded highway construction opportunities in Washington County, Utah. Failure to comply with these wage requirements can lead to contract violations. The document also outlines specific paid sick leave and minimum wage requirements applicable to federal contractors.

Forms / Attachments / Pricing Sheets

This document contains a set of construction drawings for the Crawford Diversion Fish Passage project in Zion National Park. It details the engineering plans, specifications, and site layouts required for the project.

• Cover Sheet (C1): Provides an overview of the project, sheet index, abbreviations, and project location.
• General and Civil Notes (C2): Outlines contractor responsibilities, safety, environmental protection, site conditions, and general construction procedures.
• Access, Staging, and Demolition (C3): Details the routes for access, areas for staging equipment and materials, and specific demolition requirements for existing structures.
• Erosion Control and Temporary Diversion (C4, C5, C6): Includes plans and notes for managing erosion, controlling water flow during construction, and implementing best management practices.
• Intake Structure and Waterline Plans (C6, C7, C8): Shows the design for a new intake structure, fish screens, and associated piping.
• Irrigation Canal and Pipe Plan (C9): Details the plan and profile for a new irrigation canal and associated piping.
• River and Wash Plans/Profiles (C10, C11, C12, C13, C14, C15, C16, C17): Provides extensive details on the river channel modifications, including rock ramps, fishways, bank protection, and cross-sections.

These drawings are critical for any bidder to understand the full scope of work, the specific technical requirements, site constraints, and the detailed construction methods for the Crawford Diversion Fish Passage project. They form the basis for bidding and execution of the contract.

Form / Attachment / Pricing Sheet

This document provides a template for contract pricing schedules, outlining line items for various project components. It specifies how offerors should submit pricing for base and option line items, including lump-sum and unit-priced items.

• Solicitation Number: P6426B0008 (Dam Removal) and N2011080811 (Johnstonian Visitors Center).
• Project Titles: Dam Removal (Zion National Park) and Johnstonian Visitors Center (Yellowstone National Park).
• Pricing Instructions: Offerors must provide pricing for all base and option line items. Lump-sum items require a total price. Unit-priced items require unit price and extended total price. Costs for unlisted work should be included in related items. Calculations should be rounded to whole dollars.
• Line Items: Includes examples of Contract Line Item Numbers (CLINs) with titles such as 'Dam Removal,' 'Visitors Center,' 'Water Line,' 'Sanitary Sewer Line,' 'Rock Excavation,' and optional items like 'Geothermal Wells' and 'Photovoltaic System.'
• Totals: Sections for 'TOTAL BASE PRICE' and 'TOTAL PROPOSED PRICE - BASE PLUS ALL OPTIONS.'
• Measurement and Payment: Refer to Division 01 Specifications Section 01 10 00 or 01 27 00 for details.

This pricing sheet is crucial for bidders to understand the structure of the contract's cost breakdown and to accurately prepare their proposals. It details how to format pricing for different types of work and emphasizes the requirement to price all line items, including options, to ensure proposal acceptability. Bidders must adhere to the specified rounding and calculation rules.

Sources Sought (Market Survey)

The National Park Service (NPS) is conducting a market survey to gauge contractor interest and capability for a potential upcoming project at Zion National Park, Utah. This is not a solicitation, and responses are voluntary. The results will inform the acquisition strategy.

The project involves the partial removal and disposal of an existing concrete dam and headgate structure. Key tasks include:

• Regrading approximately 300 feet of the North Fork Virgin River.

• Constructing a new intake structure with a fish screen.

• Removing and disposing of existing CMP pipe and a concrete manhole.

• Installing new ADS N-12 pipe within existing CMP pipe.

• Removing a concrete turnout box.

• Reseating an existing 12" flume.

• Installing approximately 150 feet of boulder embankment rip rap.

• (Option 1) Installing approximately 350 feet of smart ditch.

• NAICS Code: 237990 (Other Heavy and Civil Engineering Construction)

• Small Business Size Standard: $45M

• Magnitude of Construction: Anticipated between $1M and $5M.

• Bonding: Contractors should consider their construction bonding capacities.

• Contractors must be registered in SAM (System for Award Management).

• Must be registered as a small business under the relevant socio-economic categories for NAICS code 237990.

Interested firms must submit the following via email to christopher_bauer@nps.gov by 1200 EST, March 18, 2026:

• Firm Name, Address, Phone Number, Email Address, UEI Number

• Size status/SBA certifications (Small Business, WOSB, EDWOSB, HUBZone, SDVOSB, ISBEE, Other)

• Capability Statement including:

  • Bonding Limits
  • Brief explanation of company capabilities for the outlined work

• All costs for responding are the responsibility of the firm.

• This is a market research effort, not an Invitation for Bid (IFB) or Request for Proposal (RFP).

• Future solicitations, if issued, will be posted on SAM.gov.