B09-140P2026R0078-Amd_4_0004.pdf

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing items 8 and 15, and returning or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: is not is required copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7.ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

PAGE

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

PAGESOF

Contractor

The hour and date specified for receipt of Offers to sign this document and return

Vicki Freese-supler

See continuation page

NPS, DSC Contracting Services Div 1 Denver Federal Center, Building 50 P.O. Box 25287 Denver CO 80225-0287

PDS

140P2026R0078

09/14/2026

08/14/2026

1 2

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGES

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

(A)

QUANTITY

(C)

NSN 7540-01-152-8067

140P2026R0078/0004

YELL 326141 - Yellowstone Modular Housing, Yellowstone National Park, Wyoming

The purpose of this Amendment is to provide the following information:

1. Provide the final set of responses to Q&A's received.

2. To extend the proposal submission date from

September 17, 2026 to September 28, 2026 at

2:00 p.m. Mountain Time.

3. To provide for a revised Bid Schedule - see attached.

4. To provide for revised drawing sheet as follows:

a. Remove Drawing Sheets 1 of 94, Sheet

C5.02, C5.05, and C7.06 and replace with

Drawing Sheet 1 of 94, Sheet C5.02 Amd 4, Sheet

C5.05 Amd 4 and Sheet C7.06 Amd 4.

b. Remove Drawing Sheet E1-E6, E9-E10 and replace with Drawing Sheet E1-E6 Amd 4 and

Drawing Sheets E9-E10 Amd 4.

5. To provide a fillable Attachment 7 -

Limitations on Subcontracting Report.

All other terms and conditions of the solicitation remain unchanged and in full force and effect.

11/11/2024

Date Answered

Question No.

Amendment No.

Detail

Description

Response

8/27/2026 1 2 Prime Contractor Licensing---FAR 52.236-7 requires the Contractor to obtain all necessary licenses and permits, and Drawing C1.01 states that the Contractor must maintain valid Wyoming and Montana contractor licenses. We understand that a general contractor license is not generally required for construction performed within Yellowstone National Park; however, the reference to Wyoming and Montana contractor licenses in Drawing C1.01 is unclear as to whether it applies to the Prime Contractor or to licensed trades performing work under the contract. Please confirm whether the licensing requirement in Drawing C1.01 is intended to apply only to trades for which state or local licensing is required (e.g., electrical, plumbing, or other regulated trades), or whether NPS requires the Prime/General Contractor itself to hold a contractor or general contractor license or registration in Wyoming, Montana, Park County, or any other jurisdiction associated with the Canyon, Mammoth, or Northeast Entrance work sites.

There is no federal regulation/requirement for contractors or subcontractors to be licensed; however, the applicable state and local governments regulate professional and trade licenses (such as electrical, plumbing, or general construction); therefore, all contractors and/or subcontractors must comply with applicable regulations.

8/27/2026 2 2 Section 01 31 00 identifies Government-furnished permits and approvals, including the Wyoming/Montana DEQ water and wastewater permits and the Canyon Section 404/401 approvals.

Based on our review of the Contract Documents and the project’s location within Yellowstone National Park, our understanding is that NPS will administer and/or obtain the permits, inspections, and approvals required for the Work, including those that would ordinarily be administered through state or local authorities.

Please confirm this understanding and provide the following:

Existing Permits and Approvals: Confirm the permits and approvals that have already been obtained by NPS for this project Permit Validity: Please identify any existing permit or approval that may require renewal, extension, reinstatement, modification, or other action during the anticipated construction period, and confirm whether NPS will administer the required action.

NPS-Administered Permitting and Inspections: Please confirm that NPS will administer the applicable building, electrical, plumbing, mechanical, fire/life-safety, inspection, and occupancy/final acceptance processes for the Work, including those that would otherwise typically fall under state, county, or local jurisdiction

Confirmed

Answered

Question No.

Amendment No.

Detail

Description

Response

8/27/2026 3 2 Factor 3 requests an “MS Project Gantt Chart format.” Please confirm whether an Oracle Primavera P6 schedule presented in Gantt Chart format is acceptable, provided it includes all required activities, durations, logic, milestones, predecessor relationships, and critical path.

Yes that is acceptable

8/27/2026 4 2 Please confirm that the Product Binder is a separate Factor 1 deliverable and does not count toward the 15-page Concept Narrative limit.

Confirmed

8/27/2026 5 2 Both Factors 2 and 4 request organizational charts. Please confirm whether one comprehensive project organizational chart meeting both requirements may be submitted under Factor 4 and referenced in Factor 2, or whether separate charts are required.

Only one organizational chart will be required.

8/27/2026 6 2 Since we are licensed to install sprinklers, I assume it would be fine for us to install those during the build process?

Either method is acceptable either during installation or during the build process.

8/27/2026 7 2 Please provide the available electronic CAD files for the civil/site design at Mammoth Hot Springs, Canyon Village, and Northeast Entrance, including existing topographic survey information and proposed grading information. If available, please also provide existing-ground and proposed-finish-grade Civil 3D surfaces and/or LandXML surface files with the associated civil DWG files. Please confirm that electronic files provided for proposal use are informational and that the issued Contract Drawings remain controlling.

These will be provided after contract award

9/2/2026 8 3 Please provide available static and residual water-pressure information, flow data, and any available recent test information for the existing water systems serving the three project sites. Please also confirm the existing pipe size/material and intended tie-in conditions where those conditions are not fully established by the Contract Documents, so Offerors may develop a consistent proposal basis.

Project Reports including as much of this information as is available have been attached to this solicitation amendment.

9/2/2026 9 3 Please clarify the proposal basis for locating and reconnecting the existing sanitary service associated with the Northeast Entrance fourplex where the existing service location is not positively established on the Contract Drawings. Please confirm whether dye testing, exploratory excavation, or other investigative work is anticipated and identify the bidding assumption Offerors should use if the service cannot be located as shown.

Although not shown on the CDs, old construction drawings indicate that the 4-Plex discharges into the SSMH-D1. Base your pricing on the assumption that this is true, and that no work will be required to re-connect the 4-Plex to the existing sanitary sewer system.

9/2/2026 10 3 Please clarify the intended proposal basis for Canyon utility work in areas where existing utility locations, profiles, or connection conditions are approximate or require field fit. Please identify any Government-held survey, record drawings, or utility information not included in the solicitation that can be provided to Offerors, and confirm the baseline condition to be carried for proposal pricing.

Consider the Construction Drawings to be accurate as drawn, and price the work accordingly. If you have specific questions about any particular items, ask them.

Answered

Question No.

Amendment No.

Detail

Description

Response

9/2/2026 11 3 The Contract Documents provide that certain clean soil, rock, boulders, logs, and felled trees may remain NPS property and require Contractor hauling to Government-designated locations. For consistent proposal pricing, please identify the anticipated receiving, stockpile, quarry, or delivery locations for NPS-retained materials generated at each project site, or provide a maximum one-way haul distance Offerors should include.

The Government maintains salvage pits for desirable materials within 10 miles of both the Canyon and Mammoth construction areas. Do not rely on being able to dispose of any materials in these pits. The Government will not require delivery of any waste materials from the Northeast Entrance construction to Government-maintained pits.

9/2/2026 12 3 Please identify the Government-designated or anticipated disposal/delivery locations for woody slash, stumps, brush, and other green waste generated at Mammoth, Canyon, and Northeast Entrance. Please clarify whether NPS has an approved in-Park location for disposal or processing of these materials or whether the Contractor is responsible for locating and paying for an approved offsite disposal facility. If locations are not presently designated, please provide the haul-distance assumption Offerors should use.

There is not a Government-owned disposal area for the materials listed. Offerors are responsible for locating legal offsite disposal areas and the associated hauling and disposal costs.

9/2/2026 13 3 The Contract Documents require the Construction Access Plan to identify staging areas and stockpile locations. Please identify or confirm the areas available at Mammoth, Canyon, and Northeast Entrance for temporary stockpiling and segregation of salvaged topsoil/duff, satisfactory excavated material, rock, and other earthwork materials. If the designated areas are insufficient for the contemplated earthwork operations, please confirm whether additional temporary stockpile locations within previously disturbed areas may be proposed by the Contractor for Contracting Officer approval.

Allowable staging and stockpile areas are shown on Sheets C2.11, C2.12 and C2.13. Price the work with the assumption that no other areas will be offered within the park.

9/2/2026 14 3 Please identify whether NPS potable or non-potable water sources at Mammoth, Canyon, and Northeast Entrance will be available to the Contractor for dust control, moisture conditioning, compaction, and other construction operations. If available, please identify connection/fill locations, access restrictions, metering requirements, and applicable fees. If NPS water is not available, please confirm that the Contractor is responsible for independently sourcing and transporting all construction water.

NPS will make 10,000 gallons per day available to the Contractor for free at select hydrants in Mammoth and Canyon, for project use. Contractor must use a backflow preventer when taking water from the hydrants, and the park reserves the right to require Contractor-provided metering if it looks like the limit is being approached or exceeded. Water will not be made available at Northeast Entrance.

Answered

Question No.

Amendment No.

Detail

Description

Response

9/2/2026 15 3 The solicitation requires the Product Binder submitted with the proposal to include manufacturer, make/model, product information, and high-quality representations of finishes and colors for the identified product categories. The solicitation further indicates that the products identified in the Product Binder establish characteristics the Offeror commits to provide if awarded. The level of product-specific information requested appears similar to information typically developed and reviewed through the post-award product submittal process. Please clarify why this level of product submittal information is required from Offerors prior to contract award and whether NPS intends the Product Binder to function as a pre-award product submittal package. If the intent is instead to evaluate the proposed quality, performance, appearance, durability, and overall technical approach, please confirm whether Offerors may provide representative or basis-of-design products and finishes sufficient to demonstrate those attributes, with final manufacturer, make/model, finish/color selections, and complete product data submitted through the required post-award submittal process.

If final product selections are required at proposal submission, please confirm that those selections are intended to constitute the Offeror's contractual product commitment upon award.

Binder is intended to communicate the proposed quality, performance, appearance and durability of the listed materials for evaluation purposes AND to establish a minimum level of quality.

Item descriptions in the binder will be seen as contractually-binding quality baselines.

8/27/2026 16 2 Can key personnel be dual hatted? Yes, only the SSHO and QC key personnel positions can serve in a dual hat capacity. As the work may involve concurrent construction activities, the contractor shall ensure that appropriate key personnel are on site at the various locations during the performance of the work. This may entail multiple individuals serving in these roles.

8/27/2026 17 2 The solicitation package indicates RV camp pricing shall these costs be included in cost proposal?

No, these costs are paid directly to the Park and are included in the solicitation for informational purposes only.

8/27/2026 18 3 Section L states pre-proposal questions shall be submitted a minimum of seven (7) days prior to the due date and time for proposals; however, the Pre-Proposal Conference presentation identifies September 3, 2026, at 2:00 p.m. MT as the deadline for questions. Please confirm the official deadline for submission of all pre-proposal questions.

All questions shall be received by September 3, 2026

Answered

Question No.

Amendment No.

Detail

Description

Response

8/27/2026 19 3 The Past Performance Questionnaire (PPQ) included as Attachment 6 appears to have been provided as a flattened/non-fillable form.

Because offerors are required to forward the PPQ to client references for completion and submission to the Government, will the Government please provide an editable/fillable version of the PPQ to allow offerors and client references to complete the required fields and rating selections electronically?

Fillable form is attached.

9/2/2026 20 3 C2.11 Sheet C2.11 Shows the Laydown and Concrete Washout in the parking lot to the North (Rec Center). That area is currently asphalt.

Can you confirm if it is intended that the area would be repaved following construction?

Contractor is responsible for removing all un-needed concrete material from the project site after completion of the work, at no additional cost to the Government. If this requires re-paving, the Contractor would be responsible for those costs.

9/2/2026 21 3 C2.11 Sheet C2.11 indicates that the existing 8" sanitary be grouted entirely but it is a little unclear the full length. Can you confirm the length and also confirm if full removal of that section would also be acceptable?

Pipe is approximately 300 feet in length. Contractor may choose to remove of all or some of this pipe and dispose of it off-site, at no additional cost to the Government. All portions of the pipe that remains must be grouted.

9/2/2026 22 3 19-24 Can you provide cut and fill data for each site or sheets 19-24 An estimate of cut-and-fill quantities for each of the locations has been attached to this solicitation amendment. This information is unverified by the Government and is being provided as a courtesy to the offerors, if they choose to use it. The Government is not responsible for the accuracy of this information. Use at your own risk.

9/2/2026 23 3 Will the Contractor be responsible for coordinating with RV campers at the Canyon site that will have to be moved to allow installation of the new water and sewer mains shown on Sheet C5.04?

If the Contractor chooses to take advantage of the RV sites made available at 01 11 00, Paragraph 1.6.G, they will be assigned the RV sites that will be impacted by construction. If not, the contractor chooses not to utilize the RVV sites, the NPS will be responsible for coordinating with the campers to make the area available for construction, based on schedule updates provided by the Contractor.

9/2/2026 24 3 Regarding finishings in the modular homes (ie. Fixtures etc.) does anything with the Buy America Act apply? We had heard rumors on past projects that this was something that was a priority so we just wanted to verify if that would be something to consider for the homes.

This solicitation includes 52.225-11 BUY AMERICAN – CONSTRUCTION MATERIALS UNDER TRADE AGREEMENTS (Nov 2023) and this clause must be adhered to in any subsequent contract or subcontract.

9/14/2026 25 4 Are there any other staging/lay down areas that may be available for use to stage the modular sections ahead of time that are relatively close to each of the construction sites that are not included in these documents? This may help with pricing; it would allow us to feed the crane more effectively while setting the homes with less down time.

The Government cannot commit to any additional staging or laydown areas at this time. Coordination during the Construction Phase between the NPS and Construction Contractor will be ongoing in efforts to facilitate safe and efficient placement of the modular housing units. Temporary road closures may be permitted, but the NPS cannot commit to any logistical measures at this time.

Answered

Question No.

Amendment No.

Detail

Description

Response

9/14/2026 26 4 Is it ok to trade all thrust block for mega lugs? Yes - substitutions are subject to submittal requirements including review and approval/disapproval prior to implemetation and placement with related work. Substitutions which incur additional costs are the responsibility of the Construction Contractor.

9/14/2026 27 4 For utilities can either or any of these products be used: Muller, Kennedy, Mega Lug?

Components noted within the inquiry are subject to submittal review to ensure minimun technical performance requirements.

Alternate materials/components/items may be submitted for consideration provided they meet the minimum technical requirements of the originally specificed materials/components.

Proposed "Substitutions" are at the discretion of the Offeror and any associated additional costs associated with substitutions are the burden of the Offeror. Substitutions will be reviewed individually and evaluation for approval/rejection remains a requirement. Approval for use should not be presumed.The solicitation documents note a Mueller Super Centurion 250 hydrant type.

9/14/2026 28 4 Once we have gotten to good soil will native scarfing be ok for sub-base?

No

9/14/2026 29 4 Is 3" Select Road mix ok for fill and/or sub-base material? Alternate materials/components/items may be submitted for consideration provided they meet the minimum technical requirements of the originally specificed materials/components. Proposed "Substitutions" are at the discretion of the Offeror and any associated additional costs associated with substitutions are the burden of the Offeror.

Substitutions will be reviewed individually and evaluation for approval/rejection remains a requirement. Approval for use should not be presumed.

9/14/2026 30 4 Is P208 road mix ok for final base material? Alternate materials/components/items may be submitted for consideration provided they meet the minimum technical requirements of the originally specificed materials/components. Proposed "Substitutions" are at the discretion of the Offeror and any associated additional costs associated with substitutions are the burden of the Offeror.

Substitutions will be reviewed individually and evaluation for approval/rejection remains a requirement. Approval for use should not be presumed.

9/14/2026 31 4 There is detail for the curb on civil drawings, but curbing is not shown on any plans. Is the asphalt top of sidewalk ok and there is no curb?

Curb and Gutter callouts are shown on plans C3.03 behind the parking and on plans C3.04 & C3.05 behind the roadway.

Asphalt top of sidewalk is shown and permitted behind the parking lots on Sheets C3.04 & C3.05

Answered

Question No.

Amendment No.

Detail

Description

Response

9/14/2026 32 4 Mammoth – Northwestern Energy design/release, transformer schedule, and grounding demarcation - Please confirm the current Northwestern Energy design/release status for the Mammoth electrical service shown on E1-E2, including the two pad-mounted transformers, anticipated equipment lead times, required Contractor site-readiness milestones, inspections, and planned energization sequence. Please also confirm whether Northwestern Energy or the Contractor is responsible for furnishing and installing grounding electrodes, grounding connectors, and bonding associated with the two transformer/power-vault locations.

Coordination with utilities will be required. See plan sheets and specifications for additional requirements and items to provide. Sheets with additional information include E1-E10 and Division 26 and others

9/14/2026 33 4 Mammoth – Secondary point of delivery, stub-up, and utility testing - Please confirm the exact Northwestern Energy point of delivery and responsibility for the four Mammoth secondary services, including who establishes/provides final service conduit stub-up geometry and the required timing relative to foundation completion and modular-unit setting. Please also confirm that Northwestern Energy performs testing and acceptance of utility owned primary and secondary conductors, transformers and associated utility equipment with the contractor responsible for contractor furnished site electrical work and overall startup coordination.

Coordination with utilities will be required. See plan sheets and specifications for additional requirements and items to provide. Sheets with additional information include E1-E10 and Division 26 and others

9/14/2026 34 4 Canyon-Transformer/LBC4 furnishing, release and lead times - Please confirm the serving-utility/NPS scope for the Canyon primary distribution system shown on E4-E6 specifically whether Northwestern Energy furnishes and installs all six pad mounted transformers and both 1PH LBC4 utility junction enclosures. Please identify required cfontractor release dates and site readiness milestones, current anticipated lead times, paid/vault interface requirements, and the planned inspection and energization sequence. This issue remains open in our current utility scope reconciliation.

Coordination with utilities will be required. See plan sheets and specifications for additional requirements and items to provide. Sheets with additional information include E1-E10 and Division 26 and others

9/14/2026 35 4 Canyon-Transformer/LBC4 grounding and utility testing. Please confirm whether Northwestern Energy or the Contractor furnishes and installs ground electrodes, grounding conductors, and bonding at each Canyon transformer/power vault location and the two LBC4 utility junction enclosures. Please confirm that Northwestern Energy performs testing and aceptance of utility owned primary and secondary conductors, transformers, LBC4 equipment and other utility owned equipment with the contractor responsible for contractor furnished site electrical work and startup coordination.

Coordination with utilities will be required. See plan sheets and specifications for additional requirements and items to provide. Sheets with additional information include E1-E10 and Division 26 and others

Answered

Question No.

Amendment No.

Detail

Description

Response

9/14/2026 36 4 Canyon-Secondary Service point of delivery/stub up - Please confirm the exact Northwestern Energy point of delivery and responsibility for the ten Canyon secondary services, including who establishes/provides final service conduit stub up geometry at each residence and the required timing relative to foundation completion and modular unit setting.

Coordination with utilities will be required. See plan sheets and specifications for additional requirements and items to provide. Sheets with additional information include E1-E10 and Division 26 and others

9/14/2026 37 4 Northeast Entrance - Flathead primary equipment/vault scope demarcation - Please confirm the complete Flathead Electric/Contractor scope for the Northeast Entrance primary system shown on E3, including who furnishes and installs the new pad mounted transformer, new three-phase primary valut/pad mount transformer lid, primary pulling vault, primary condut and conductors, and rigid steel sweep/riser at the existing utility pole/transformer vault interface.

Coordination with utilities will be required. See plan sheets and specifications for additional requirements and items to provide. Sheets with additional information include E1-E10 and Division 26 and others

9/14/2026 38 4 Northeast Entrance - Flathead connection charges, design status and lead times - because the contractor is responsible for Northeast Entrance temporary and permanent Flathead Electric connection charges, please provide any current Flathead Electric service application, utility design, budget/estimate, authorization, or other connection charge information available for this project. Please also confirm expected utility design/release timing, transformer/equipment lead times, site readiness milestones and energization sequence.

Coordination with utilities will be required. See plan sheets and specifications for additional requirements and items to provide. Sheets with additional information include E1-E10 and Division 26 and others

9/14/2026 39 4 Northeast Entrance - Flathead grounding and utility testing demarcation - Please confirm whether Flathead Electric or the Contractor furnishes and installs grounding electrodes, ground conductors, and bonding at the new primary vault/pad mounted transformer location, primary pulling vault and existing utility transformer vault/pole interface. Please also confirm which primary and secondary conductors, transformer/vault equipment, and utility interfaces are tested and accepted by Flathead Electric versus the Contracting, includidng responsibility for final energization and documentation required for NPS acceptance.

Coordination with utilities will be required. See plan sheets and specifications for additional requirements and items to provide. Sheets with additional information include E1-E10 and Division 26 and others

9/14/2026 40 4 Northeast Entrance - Secondary Service Point of Delivery/Stub Up - Please confirm the exact Flathead Electric point of delivery and responsibility for the two Northeast Entrance residence secondary services, including who furnishes/installs the service conduit and conductors, who established final service stup up geometry and the required timing relative to foundation completion and modular unit setting.

Coordination with utilities will be required. See plan sheets and specifications for additional requirements and items to provide. Sheets with additional information include E1-E10 and Division 26 and others

Answered

Question No.

Amendment No.

Detail

Description

Response

9/14/2026 41 4 All Sites - Permanent Telecom Provide Scope, Fees, and Demarcation - Please confirm the required permanent telecom service scope at Mammoth, Canyon and Northeast Entrance, including the serving provider at each site, required point of demarcation, whether provider-furnished cable/fiber/electronics are included by the provided and whether any permanent provider connection or service charges are Contractor costs. For Northeast Entrance, please also confirm whether a new communications vault/handhole is required in addition to the existing telecom pedestal shown on E3.

Coordination with utilities will be required. See plan sheets and specifications for additional requirements and items to provide. Sheets with additional information include E1-E10 and Division 26 and others

9/14/2026 42 4 All Sites - Environmental/Biological Surveys and Resource Delineations - Please confirm whether all required preconstruction environmental and biological surveys, protected species surveys, wetland delineations, and similar resource invetigations necessary to establish approved construction limits have been completed by NPS.

If additional surveys, monitoring, delineation, or environmental consultant services are the Contractor's responsibility, please identify the required scope by site.

Investigations of the type listed, if any, are identified in the Contract Documents.

9/14/2026 43 4 Are you aware of any construction projects that will significantly delay traffic in 2027 or 2028?

Yes. With the exception of the Norris-to-Golden Gate project (see below), the following scheduled projects are not anticipated to delay traffic by more than 30 minutes: Mammoth to Gardiner Road, September 2027 to November 2031; Gardiner River High Bridge (just east of Mammoth, on the way to Tower Junction), ongoing through October 2027; Madison River Bridge tree clearing (between West Yellowstone and Madison Junction), Fall 2027.

The Norris-to-Golden Gate project, scheduled for April 2027 through October 2029, will delay traffic between Norris and Mammoth for up to 20 minutes from July 5 to September 12 (2027-2029), for up to 30 minutes from September 13 to July 4 (same years), will have nighttime closures (8 PM to 7 AM) from June 23 to September 6, 2027), and will have a full closure from September 7 to October 31, 2027.

Additionally, the park will perform unscheduled-for-now routine maintenance across the Yellowstone road system over the course of the Modular Housing project.

This information is subject to change. The Government will not consider any delay claims based on this information, which is being provided as a best-available-information courtesy to offerors.

Answered

Question No.

Amendment No.

Detail

Description

Response

9/14/2026 44 4 It was said during the site walk-through that Contractors would be required to develop their own water system flow and pressure data.

Is that now a requirement?

Following award of the Construction Contract, the GOVT/NPS will issue an RFP to support performance of fire flow/hydrant testing at all three project sites to ensure current flow rates (static/residual) are confirmed. Offers shall not include any presumed costs for such testing within proposals at this time.

9/14/2026 45 4 FAR 52.219-14(f) has two unchecked boxes. Which compliance period applies?

As this is an individual contract award (not an order under a Task Order Contract) - the following is applicable: "by the end of the base term of the contract and then by the end of each subsequent option period."

9/14/2026 46 4 SF 1442 Block 10(f) stated the requirement is unfunded with "high expectation" of funding. Confirm the funding outlook and whether the 90-day minimum acceptance period may be extended.

The 90-day acceptance period is sufficient.

9/14/2026 47 4 Confirm the bid guarantee is the $3,000,000 cap rather than 20% of the proposed price?

As per FAR 52.228-1 - Bid Guarantee - "The amount of the bid guarantee shall be 20 percent of the bid price or $3,000,000, whichever is less."

9/14/2026 48 4 Under FAR 52.225-11 is a complete modular unit evaluated as single pre-assembled construction material or component by component for domestic content? If component level - will NPS entertain pre-award determinations for appliances and heat pumps?

It is a component by component construction materials as is typical in the construction industry. No, NPS will not entertain the proposed scenario.

9/14/2026 49 4 Does FAR 52.222-5 extend David Bacon coverage to the modular manufacturing plant as a secondary site of the work?

No. These are considered manufacturing facilities and not subject to Davis Bacon requirements.

9/14/2026 50 4 Spec 01 27 -- states the six modular unit CLINs are measured and paid PER UNIT, Section B lists all nine CLINs as LS with totalprice only.

Issue a corrected Section B and confirm whether the unit CLINs should carry quantities and unit prices

Pricing shall be submitted as shown on the bid schedule.

9/14/2026 51 4 Spec 01 27 00; Section B Spec 01 27 00 orders CLINs 0004-0006 as Northeast Entrance and 0007-0009 as Mammoth, the reverse of Section B. Confirm the correct assignment by amendment.

Please refer to revised Bid Schedule attached to Amendment 4.

Answered

Question No.

Amendment No.

Detail

Description

Response

9/14/2026 52 4 Spec 01 27 00; Section B Define the CLIN boundary between "Site Improvements" and the modular unit CLINs for: foundations, crawlspace, anchor rods, utility laterals from main to unit, site concrete (walks, stoops, pads), the four Mammoth garages, and the twelve 2BR decks. Section M warns on unbalanced pricing under FAR 15.404-1(g); offerors need this in writing before allocating.

Site Improvement CLIN items are defined in 01 27 00. Everything not listed in the site improvement CLIN description shall be attributed to a "building" CLIN.

9/14/2026 53 4 Section B; Section M(3)(c);

Spec 01 27 00; Dwg S101/S201

Is a classified rock and trench rock unit price being added to Section B, or is 100% of rock risk carried in the lump sum? Spec 31 23 00 defines Rock and Trench Rock in full (D-8 with 50,000 lb breakout, CAT 320 with RR bucket, 6-inch over-excavation allowance, 35% volume reduction) but no rock pay item exists in Section B or 01 27

00. Note that the project's own erosion control detail concedes shallow bedrock: C7.01 detail 1 note 3 directs gravel bags over wattles where stakes cannot be used due to bedrock. If no pay item is added, the 31 23 00 measurement provisions serve no purpose and should be struck.

All of the CLINs related to this project shall be paid on a per unit or lump sum basis as defined in Section 01 27 00.

9/14/2026 54 4 Spec 31 23 00; Section B; Spec 01 27 00; Dwg C7.01 det 1 note

Every Canyon sanitary manhole is set at or below the depth at which the only Canyon boring hit auger refusal. Rim-to-invert: SSMH 1 9.82 ft, SSMH 2 9.44, SSMH 3 9.67, SSMH 4 9.41, SSMH 5 9.46, SSMH 6

9.48. Terracon boring B-05 encountered severely to completely weathered bedrock at 9.1 ft with auger refusal at 50 blows per inch.

State the anticipated rock quantity for the Canyon utility trenches or add a unit price. The Amendment 3 Canyon Project Report adds no subsurface data. It states only that the sanitary lines will have depths of cover over 6 feet in all locations, and it does not address rock. This question is unchanged.

The B-05 boring was not located within the current Canyon Housing area. Contractor responsible for trenching to the depths as shown on the plans. See specifications, including section 31 23 00 for additional information

9/14/2026 55 4 Dwg C5.05 (29); C5.06 (30);

Att. 1A App. D

Blasting is prohibited; only ripping, hydraulic hammer, or expansive grout with CO approval. Confirm expansive grout is pre-approved for trench rock and state the approval turnaround.

Expansive grout is not pre-approved. In scope work requiring alternate methodologies shall be proposed to the CO for consideration. This may include a project-specific/site-specific expansive grout plan for CO approval, and can expect Government response within two calendar weeks.

9/14/2026 56 4 Spec 31 23 00; Spec 01 11 00 Spec 31 23 00 excludes hardpan, loose rock, and boulders from classified rock, yet the NE Entrance boring logged large cobbles and boulders and the drawing legend maps boulders as an existing site feature. How is boulder and oversize removal compensated?

All of the CLINs related to this project shall be paid on a per unit or lump sum basis as defined in Section 01 27 00.

9/14/2026 57 4 Spec 31 23 00; Att. 1A App. D;

Dwg C5.03; C1.03 legend

NE Entrance sanitary trenches run 10.87 to 11.10 ft deep (SSMH-D3 11.10, SSMH-D2 10.87) in alluvial sand and gravel with large cobbles and boulders above rhyolite bedrock at 14.1 ft. Confirm the anticipated excavation classification and shoring basis.

The Construction Contractor is responsible for development and implemtation of safe shoring plans/practices. See specifications, including sections 02 41 19 and 31 23 00 for additional information

Answered

Question No.

Amendment No.

Detail

Description

Response

9/14/2026 58 4 Dwg C5.03 (27); Att. 1A App. D Mammoth sanitary trench depths sit at the measured groundwater table: SSMH 1 and SSMH 2 are each 8.67 ft rim to invert, and the 1989 Braun report recorded groundwater at 8.3 to 14.8 ft in three of four borings. S001 general note 14 states the contractor shall be solely responsible for any required dewatering of the site during construction, with no pay item and no reference to differing site conditions, and Spec 31 23 19 likewise carries no pay item. Confirm whether NPS considers groundwater above design invert a compensable differing site condition notwithstanding note 14, and identify where dewatering discharge is permitted in a hydrothermal area.

The report includes information located outside of the project area and is provided For Information Only (FIO). The Construction Contractor is responsible for development and implementation of groundwater management plans/practices. Speculation as to status of un-surveyed sub-grade site conditions are at the discrection of the Offeror.

9/14/2026 59 4 Dwg C5.02 (26); Dwg S001 note 14; Att. 1A App. E; Spec

31 23 19

Mammoth alluvium at 5-9 blows per foot will not support 2,500 psf without over-excavation and structural fill, and no over-excavation or subgrade improvement detail appears in the set. Is over-excavation anticipated and how is it paid?

The report includes information located outside of the project area and is provided For Information Only (FIO). See plans and specifications including structural sheets for project design

9/14/2026 60 4 Att. 1A App. E; Dwg S500/S501 Which report is the geotechnical basis of design? S001 cites a McGettigan Consulting report, project 15000701, available for review at the architect's office and included in none of the appendices. Will it be issued? Is the 1,500 psf allowable bearing on S001 deliberate conservatism or a carryover, given Terracon reports 2,500 psf continuous and 3,000 psf isolated?

The report includes information located outside of the project area and is provided For Information Only (FIO). See plans and specifications including structural sheets for project design

9/14/2026 61 4 Dwg S001; Att. 1A App. C, D, E Both Terracon borings were drilled for a different project (YELL 309913 Predesign Services), one boring per site. The Mammoth report is dated 02/22/1989 for a proposed four-plex. Will NPS commission a current investigation, or grant reliance on these reports as the FAR 52.236-2 baseline, notwithstanding Spec 01 11 00 para 1.13 stating they are not Contract Documents?

The NPS currently has no plan to perform additional technical investigations at areas associated with this solicitation.

9/14/2026 62 4 Spec 01 11 00 para 1.13; FAR 52.236-2; Att. 1A App. C, D, E

Confirm the basis for hauling excess excavation and green waste offsite, and whether material may be balanced between sites.

Amendment 3 Q&A 11 states the Government maintains salvage pits within 10 miles of Canyon and Mammoth but directs offerors not to rely on being able to dispose of any materials in them, and Q&A 12 states there is no Government-owned disposal area for slash, stumps, brush or green waste and that offerors are responsible for locating legal offsite disposal and the associated hauling and disposal costs. Against the Amendment 3 cut and fill estimate this is approximately 3,232 CY of net export from Mammoth and NE Entrance plus all cleared vegetation, hauled out of the park. Confirm:

(a) whether NPS will identify any receiving location, even conditionally, so offerors price on a common basis; (b) whether Mammoth and NE Entrance export may be hauled to Canyon Village and used as the imported fill required there, which would substantially reduce total haul; and (c) whether the felled trees, including the 60 five-needle pine at Canyon, are NPS property to be retained or contractor waste to be disposed.

Excess materials and spoils shall be hauled outside of the park.

However, should excess materials/spoils at one location associated with this solicitation be assessed as suitable for use at another location associated with this solicitation, a formal and technically based proposal for "re-use" may be provided to the CO for consideration - no presumption of accptance should be inferred.

Answered

Question No.

Amendment No.

Detail

Description

Response

9/14/2026 63 4 Amd 3 Q&A 11, 12, 22; Att. cut and fill estimate; Dwg C2.11-

C2.13

Confirm the status of the Amendment 3 cut and fill estimate. The estimate provides Mammoth 1,717.41 CY cut / 422.63 CY fill / 1,294.79 CY net export; NE Entrance 2,293.67 CY cut / 356.95 CY fill / 1,936.71 CY net export; and Canyon 1,880.10 CY cut / 3,699.95 CY fill / 1,819.86 CY net import, expressly outside the building envelope, excluding foundation excavation, and excluding asphalt, concrete, base and subbase. The transmittal states the information is unverified, provided as a courtesy, and that the Government is not responsible for its accuracy. Confirm whether an offeror who prices on these quantities carries the variance, or whether a material difference between the estimate and the as-built quantity is a compensable change. Also confirm whether foundation excavation and the pavement section quantities are to be added to these figures or are already reflected in the site CLINs.

Information is unverified. The Government will not consider claims that reference this estimate. Offerors are wholly responsible for pricing the work based on information provided in the Construction Documents.

9/14/2026 64 4 Amd 3 Q&A 22; Att. estimated cut and fill quantities

Provide the measured static and residual pressure at NE Entrance.

The Canyon Village and Mammoth Project Reports were received with Amendment 0003 and both report field hydrant testing with EPANET results: Canyon service nodes model 55.14 to 66.23 psi with

32.36 psi residual at 1,000 gpm, and Mammoth service nodes model

87.03 to 100.19 psi with 33.90 psi (M1) and 23.26 psi (M3) residual at 1,000 gpm. The NE Entrance Project Report gives demands only and reports no measured pressure, so NE Entrance service pressure, PRV count and meter loss remain unpriceable. Provide the NE Entrance hydrant test data and modeled service-node pressures.

see resonse to question 44.

9/14/2026 65 4 Amd 3 Canyon Project Report Sec 4.1-4.2, App. C; Amd 3

Mammoth Project Report Sec 4.1-4.2, App. C; Amd 3 NE

Entrance Project Report; Amd 3 Q&A 8

Issue the current Park-inspected gravel pit list. The attached list is 2024-2025 with expirations near 10/1/25 and the nearest PASSED pits are in Livingston, MT. Confirm which pits will be valid in the 2027 and 2028 seasons and whether recertification of a closer pit is available and at whose cost. Note the imported aggregate demand is now quantified: 12 in Class A sub-base under all roadway and parking, 10 in crushed base under all pavement trench restoration, and non-frost-susceptible fill under the garage slabs per Q100.

The pits identified are those which are currently approved for use within the Park. This list is updated annually and as such, will be updated on its regular review schedule. If the contractor wishes to utilize a different pit than those identified, the contractor must submit the recertification request and all costs for such are borne by the contractor.

9/14/2026 66 4 Spec 01 71 13; pit list; Dwg C7.02 det 3; C7.07 det 4; S001 note 20

Is on-site concrete batching permitted at any of the three locations?

If not, will NPS grant relief from the ASTM C94 90-minute discharge limit given haul times from Gardiner, Cody, and Cooke City?

No "at site" concrete batching is permitted - the Offer may submit a technical "satellite" batching plan to the CO for consideration - development and submittal of such a plan should not be presumed to confer acceptance. Concrete submittals will be reviewed on an individual basis for acceptance. Ongoing projects and construction contractors within Yellowstone may have concrete supply options/solutions suitable for consideration by offerors. Any such options are the responsibility of the Construction Contractor to administer.

Answered

Question No.

Amendment No.

Detail

Description

Response

9/14/2026 67 4 Spec 03 30 00 Can foundations be placed in fall 2026 or early season ahead of module delivery, or does the road-closure window force all work into a single season?

Discrete work task scheduleing is at the discretion of the Construction Contractor and are considered means/methods. The Construction Contractor must provide a complete project schedule as a DIV 01 submittal for GOVT/NPS review and approval. The Government makes no guarantees in relation to weather events which may preclude safe working conditions.

9/14/2026 68 4 Section F; Spec 01 11 00 The Mammoth MA 3356 connection invert conflicts between plan and profile. Plan callout: STA 23+83.51, INV 6025.22. Profile invert table: new 8" IN at 6021.86, a 3.36 ft discrepancy. The profile figure closes arithmetically (SSMH 2 OUT 6025.31 less 173 LF at 2.00%) but places the new main 2.91 ft below the existing 18" outlet invert of

6024.77. If the plan's 6025.22 is correct, the reach runs at

approximately 0.05%. Provide the governing invert and a corrected profile. Answer together with Q26 and note the Q85 sequencing constraint.

NOTE : revision to sheet C5.02 issued - SSMH1 Out: 6035.79

SSMH2 IN: 6028.50

SSMH2 Out: 6028.40 SSMH3 In: 6024.87

9/14/2026 69 4 Dwg C5.02 (sheet 26) Mammoth SSMH 2 shows INV 8" IN and INV 8" OUT both at 6025.31 -no drop across the structure. C7.05 detail 5 note 1 requires drop across invert to be greater than or equal to the slope of the adjacent sewer, and every Canyon manhole carries a 0.10 ft drop. Confirm intent or provide corrected inverts. Same reach as Q25.

NOTE : revision to sheet C5.02 issued - SSMH1 Out: 6035.79

SSMH2 IN: 6028.50

SSMH2 Out: 6028.40 SSMH3 In: 6024.87

9/14/2026 70 4 Dwg C5.02 (26); Dwg C7.05 det 5 note 1

Mammoth SSMH 1 requires a drop connection that is not detailed.

The existing 8" VCP enters at INV 6035.89 and the outlet is 6032.59, a

3.30 ft drop inside the structure. C7.01 through C7.07 contain no drop-manhole detail; C7.05 detail 5 addresses drop across invert only. Provide an inside or outside drop detail.

NOTE : revision to sheet C5.02 issued - SSMH1 Out: 6035.79

SSMH2 IN: 6028.50

SSMH2 Out: 6028.40 SSMH3 In: 6024.87

9/14/2026 71 4 Dwg C5.02 (26); Dwg C7.05, C7.06

"12.25 degree bend" is called out twice, at STA 101+28.58 and 103+60.05. Standard AWWA C900 deflection fittings are 11.25 and

22.5 degrees. Confirm the correct fitting.

NOTE : revision to sheet C5.05 issued - 11.25 degree bend.

9/14/2026 72 4 Dwg C5.05 (sheet 29) EX SSMH CA2078 (STA 100+64.53, OFF 40.57' L) and EX SSMH CA2205 (STA 100+31.06, OFF 95.28' R) are both shown at RIM 7946.90.

Confirm the correct rim elevations. Separately, no work is called out at either structure - state whether the existing 6" VCP services tied to them are abandoned, reconnected, or left in service.

NOTE : revision to sheet C5.05 issued- CA2078 Rim revised to

7942.52. CA2205 Rim revised to 7947.14. Inverts are shown

correctly. No work is proposed at either…