Z--Siding Replacement

Questions & Answers / Clarifications

This document provides responses to vendor questions regarding the Siding Replacement - INDU opportunity (Solicitation #: 140P6426B0003, Amendment #: P0002).

• Limitations on Subcontracting: FAR 52.219-14 applies, with the 15% cost-of-contract performance requirement for general construction being the applicable threshold. Businesses considered small under NAICS 236220 and $45.0 Million will be considered similarly situated. The LIMITA_1 report is required at each progress payment milestone.
• Wage Determination: General Decision No. IN20260054 (Residential) is incorporated. Contractors are responsible for properly classifying laborers. A firm fixed-price contract will be awarded, and contractors must pay wage rates in accordance with the applicable wage determination.
• Color Standard: The governing color standard will be confirmed through the submittal process after award. The government has a 10-day turnaround time for paint/siding color submittals and mockups. Schedule adjustments will not be issued if factory color lead times exceed 4 weeks.
• Windows: Existing windows will be replaced in kind. All dimensions have been provided, but contractors must verify all measurements in the field. Contractors bear the cost of re-orders or custom fabrication if field measurements differ from provided data.
• Sheathing: The 2" Zip System R-Sheathing is not considered a structural element and should be installed per the 2024 building code. The specifications require inspection and replacement of 10% of existing OSB and wood frame, with consideration for the Zip System's embedment requirements.
• Hazardous Materials: No Hazardous Materials Assessment (HMA) or asbestos-containing materials (ACM) survey has been conducted. Existing siding, insulation, and paint were installed in the 1990s and are presumed not to contain ACMs or lead-based paint (LBP). The contractor is responsible for lead hazard identification, abatement, and compliance.
• Framing/OSB: No as-built drawings or framing surveys exist to independently verify framing spacing. Quantities exceeding 10% of walls requiring remediation will be treated as a differing site condition, entitling the contractor to an equitable price and schedule adjustment. The 10% assumption is not a cap on the government's liability for actual field conditions discovered.

These Q&As clarify requirements related to subcontracting, wage rates, materials, and site conditions, which may impact bidder proposals and cost estimations. No changes to due dates or submission rules were noted.

Amendment / Modification

• This amendment posts a revised Specifications document.

• It also includes additional Questions/Answers related to the Siding Replacement Project for Indiana Dunes National Park.

• The response date for the solicitation has been extended.

• Specifications document (revised)

• Questions/Answers (additional)

• The proposal response date has been extended to Wednesday, April 22, 2026, at 12:00 PM EST.

• Bidders are instructed to complete the SF Form 1442 as instructed.

• All amendments must be read, and the SF 30 must be signed and returned once downloaded from SAM.gov, or bidders must acknowledge review in Block #139 on the SF 1442.

Project Specifications

This document outlines the project specifications for replacing siding at the Indiana Dunes National Park Headquarters, specifically for buildings B-101 (Ranger Station), B-104 (Headquarters), and B-105 (Pump House). The project involves the removal of existing siding and insulation, evaluation and potential replacement of underlying OSB and framing, and the installation of new fiber cement lap siding. It also includes the replacement of damaged wood trim, gutters, downspouts, and potentially window sills and trim. The specifications detail the removal and re-installation of exterior conduits and plumbing lines to be concealed under the new siding. Bid options include EPDM roof replacement and aluminum-clad wood window replacement.

• Removal of existing siding and insulation.

• Evaluation and replacement of OSB and framing as needed (estimated 10% replacement).

• Addition of framing to reduce spacing to 16" or less (estimated 10% of walls).

• Replacement of damaged fascia (estimated 10%).

• Replacement of window sills and trim (estimated 25% of sills and all trim above new siding).

• Concealment of exterior conduits, plumbing lines, and communication cables.

• Installation of new fiber cement lap siding.

• Bid Option 1: EPDM roof replacement for B-101 and B-105.

• Bid Option 2: Replacement of 22 windows across B-101 and B-104.

• Period of Performance: 120 calendar days from Notice to Proceed.

• Bidders are urged to visit the job site to examine existing conditions.

• Submittals include Product Data, Shop Drawings, Samples, Wind Uplift Resistance Submittals, Manufacturer Certificates, Product Test Reports, Research Reports, Field Test Reports, Field Quality-Control Reports, Sample Warranties, and Operations and Maintenance Manuals.

• Not specified in this document.

• The project is located at 1100 Mineral Springs Rd, Porter, IN 46304.

• The buildings are part of the historic Nike Missile Site configuration.

• Appendix A includes drawings, quantities, and pictures. Appendix B provides project photos and notes.

Amendment / Modification

This amendment (0001) to solicitation 140P6426B0003, dated 03/13/2026, serves to:

• Post a Revised Bid Schedule.

• Provide Questions and Answers (Q&A) for interested parties.

• The Bid Schedule has been revised.

• Q&A have been provided.

• Bidders must complete the SF Form 1442 as instructed.

• All amendments must be signed (SF 30) and returned, or acknowledged as reviewed in Block #13 of the SF 1442.

• The effective date of this amendment is 04/06/2026.

Questions & Answers / Clarifications

This document provides responses to vendor questions regarding the Siding Replacement - INDU solicitation (Solicitation #: 140P6426B0003, Amendment #: P0001).

• Siding Painting: Siding must be factory primed with manufacturer's standard acrylic primer. Siding Cement is to be painted after installation.
• Option 2 (Jamb Extensions): If Option 2 is not exercised, the scope of work will include jamb extensions for existing doors and windows.
• Insulation Thickness/R-Value: The specified insulation thickness for the project must provide an R-value of 9.
• Exterior Wall Insulation/Sheathing Assembly: The base bid requires the use of 2" ZIP System R-Sheathing (R-9) with integrated WRB, per the project specifications.

An Amended Bid Schedule has been posted, indicating changes or clarifications to the original schedule based on these questions and answers.

Forms / Attachments / Pricing Sheets

This document contains the Independent Government Cost Estimate (IGCE) for the Head Quarters Siding and Roof Replacement project at Indiana Dunes National Park. It details the estimated costs for various tasks, including siding replacement, roof replacement (Option 1), and window replacement (Option 2).

• Siding Replacement (Buildings B-101, B-104, B-105): Includes demolition, disposal, replacement of T1-11 siding with fiber cement siding, and potential replacement of OSB, studs, insulation, weather barrier, and wood trim. Also includes painting of concrete walls for B-104 and B-105.
• Roof Replacement (Option 1 - Buildings B-101 & B-105): Involves demolition and disposal of existing EPDM roofs, installation of new EPDM flat roofs with gutters, metal flashing, boots, and replacement of fascia and damaged decking or framing. Also includes replacement of vinyl soffit for B-101.
• Windows Replacement (Option 2 - Buildings B-101 & B-104): Covers demolition and disposal of existing windows, and replacement of windows and rotten wood frames. Specific quantities and dimensions for windows in each building are provided.
• Mobilization: A line item for mobilization is included for each major task.
• Quantities and Dimensions: The document provides estimated quantities (e.g., Area in S.F., Linear Feet, Each) and dimensions for materials and labor. Bidders are responsible for verifying all quantities and dimensions.

This document provides a detailed breakdown of the estimated costs and scope of work for the siding, roof, and window replacement tasks. Bidders should use this information to understand the anticipated project requirements and to prepare their bids. It is crucial for bidders to verify all quantities and dimensions as stated in the document.

Other / Unclassified

This document is a General Decision Number (GDN) for wage determination, specifically for residential construction projects in Jasper, Lake, Newton, and Porter Counties in Indiana. It outlines prevailing wage rates and fringe benefits for various construction crafts and laborers, including Carpenters, Electricians, Power Equipment Operators, Laborers, and Plumbers. The document also includes notes on Executive Orders related to paid sick leave (EO 13706) and minimum wage for federal contractors (EO 13658), as well as information on how wage determinations are structured and the process for appealing wage determinations.

This document is highly relevant for bidders on federal construction projects in the specified Indiana counties. It provides the legally mandated minimum wage rates and fringe benefits that must be paid to laborers and mechanics employed on such projects. Bidders must use this information to accurately estimate labor costs for their proposals and ensure compliance with federal labor laws. Understanding these wage requirements is crucial for developing a competitive and compliant bid.

Solicitation / RFP / RFQ

This solicitation is for siding replacement, painting, roof replacement, and window replacement at the National Park Service, MWR Ohio MABO. The estimated magnitude of construction is between $500,000 and $1,000,000. This project is a Total Small Business Set Aside.

• Siding replacement

• Painting

• Roof replacement

• Window replacement

• Contract Type: Firm-fixed price

• Period of Performance: 10 calendar days to commence after notice to proceed, and 120 calendar days to complete.

• Proposal Submission: Bids must be submitted electronically via email to jarrod_brown@ios.doi.gov. The bid package must be in PDF format and include the Solicitation Form SF1442, Amendments (if applicable), Bid Schedule, SF24 Bid Guarantee, and a Completed Limitation on Subcontracting Report Worksheet.

• Bid Opening: Virtual bid opening on Wednesday, April 15, 2026, at 12:00 PM ET. Call-in information is provided.

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

• Offer Due Date: April 15, 2026, at a time to be specified in Block 13a of the SF1442.

• Total Small Business Set Aside.

• NAICS Code: 236220 with a size standard of $45.0 Million.

• Offerors must have an active registration in SAM.gov.

• An organized site visit is scheduled for April 1, 2026, at 10:00 AM CT at Indiana Dunes National Park. Attendance is not mandatory but is strongly encouraged.

• Questions regarding the solicitation must be submitted in writing to jarrod_brown@ios.doi.gov no later than 3 calendar days following the organized site visit.

Form / Attachment / Pricing Sheet

This document is a template for reporting on the "Limitations on Subcontracting" clause for contracts. It is used to track and report the amounts paid to the prime contractor, similarly situated subcontractors (SSS), and non-similarly situated subcontractors (NSS) during a specified performance period.

• Contract Number (PIID): 140P6426B0003
• Type of Set Aside: Total Small Business
• Type of Service: General construction
• Performance Period for This Report: 120 days after issuance of NTP
• Fields to report:
  • Total Amount Paid by the Government to the Prime during the Performance Period
  • Total Amount Paid to each Similarly Situated Subcontractor (SSS)
  • Total Amount Paid to SSS
  • Total Amount Paid to each Non-Similarly Situated Subcontractor (NSS)
  • Total Amount Paid to NSS
• Calculation for Limitation on Subcontracting Percentage is provided.

This template is crucial for bidders responding to a "Total Small Business" set-aside contract. It outlines the specific reporting requirements for subcontracting limitations that will likely be a part of the contract terms. Bidders should understand these requirements to ensure compliance and accurate reporting if awarded the contract. The "General construction" service type and the "120 days after issuance of NTP" performance period provide context for the contract this report relates to.

Other / Unclassified

This document, "Notice to Contractors - Contractor Performance Assessment Reporting System (December 2015)," outlines the Department of the Interior's (DOI) process for collecting and reporting past performance information on contracts, in compliance with FAR 42.1502.

• Process Overview: The process is entirely paperless and utilizes the web-based Contractor Performance Assessment Reporting System (CPARS).
• Contractor Access: Contractors must provide names of designated personnel to access their past performance evaluations within 30 days after award. These individuals can provide comments on the evaluation.
• Evaluation Timeline: An interim or final past performance evaluation will be completed by the Assessing Official (AO) within 60 days after the end of a performance period.
• Contractor Response: Contractor Representatives will receive login instructions via email and have 60 calendar days to provide comments or acknowledge receipt of the evaluation. Failure to respond within this timeframe will result in the report being automatically returned to the Government.
• Use of Data: Past performance evaluations are considered source selection information and must be protected. Contractors are prohibited from using evaluation data for advertising, promotional materials, or other similar purposes.
• Discussion of Evaluations: Contractors wishing to discuss an evaluation should request a meeting with the Contracting Officer (CO) in writing no later than seven days after receiving the evaluation.

Specifications

This document outlines the project specifications for replacing siding at the Indiana Dunes National Park Headquarters, specifically at buildings B-101 (Ranger Station), B-104 (Headquarters), and B-105 (Pump House). The project involves removing existing siding and insulation, evaluating and potentially replacing OSB and framing, inspecting and replacing fascia and window trim, and re-installing or hiding exterior conduits and plumbing lines.

• Siding Replacement: Removal of existing siding and exterior rigid insulation, followed by the installation of new fiber cement lap siding.

• Building Components: Replacement of damaged or rotten fascia (estimated 10%), window sills and trim (estimated 25%), and potentially some OSB and wall framing (estimated 10%).

• Utilities: Re-installation of electrical conduits, exposed wires, gas plumbing lines, and communication cables to be hidden under new siding where possible. This work requires a certified electrician and plumber.

• Roofing (Bid Option 1): Replacement of EPDM roofing on buildings B-101 and B-105, including new gutters, metal flashing, fascia, and decking replacement (estimated 10% of roof framing).

• Windows (Bid Option 2): Replacement of 21 windows across buildings B-101 and B-105, including demolition, new aluminum-clad wood windows, caulking, and painting.

• Exterior Painting: Painting of front porches (beams, columns, ceiling) for B-101 and B-104, and preparation and painting of the concrete tank surface area for B-105.

• Period of Performance: Work to be completed within 120 calendar days of the Notice to Proceed.

• Work Location: 1100 Mineral Springs Rd, Porter, IN 46304.

• Bidders are urged to visit the job site to examine existing conditions.

• Submittals include Product Data, Shop Drawings, Samples, and other documentation as detailed in the specifications.

• Not specified in this document.

• The three buildings are part of the former Nike Missile Site and are being considered for the National Register of Historic Places.

• Appendix A contains drawings, quantities, and pictures. Appendix B contains project photos and notes.

• Specific materials like Huber Engineered Woods ZIP System® R-sheathing and James Hardie Fiber Cement Siding are specified, with "approved equal" options available.

Form / Attachment / Pricing Sheet

This document provides the Independent Government Cost Estimate (IGCE) for the Head Quarters Siding and Roof Replacement project at Indiana Dunes National Park. It details the estimated costs for base bid items and two additive bid items.

• Base Bid (Siding): Replacement of existing T1-11 siding with Fiber Cement Siding on Ranger Station (B-101), Headquarters (B-104), and Pump House (B-105). Includes demolition, disposal, potential OSB and stud replacement, insulation, weather barrier, and painting of concrete walls for B-104 and B-105.
• Additive Bid 1 (Roof): Replacement of EPDM roofs on Ranger Station (B-101) and Pump House (B-105). Includes gutters, metal flashing, boots, fascia replacement, and decking/framing repair. Also includes vinyl soffit replacement on B-101.
• Additive Bid 2 (Windows): Replacement of windows and rotten wood frames on Ranger Station (B-101) and Headquarters (B-104). Specifies the number and dimensions of windows for each building and includes caulking and painting.
• Note: All quantities and dimensions are estimates; contractors are responsible for verifying them.

This document provides detailed cost breakdowns and scope for siding, roofing, and window replacement tasks. Bidders should use this information to understand the estimated scope of work and to prepare their proposals, ensuring their bids cover all specified requirements and potential repairs.

Sources Sought (Market Survey)

The National Park Service (NPS) is conducting a market survey to gauge contractor interest and capability for a potential upcoming siding, painting, and roof replacement project at Indiana Dunes National Park, Indiana. This is not a solicitation, and responses are voluntary. The results will inform the government's acquisition strategy.

• The project involves providing all labor, materials, tools, and equipment for siding replacement, painting, and roof replacement.
• Work is anticipated to begin in late April/early May 2026.
• NAICS Code: 236220 (Commercial and Institutional Building Construction)
• Small Business Size Standard: $45.0M
• Estimated Magnitude of Construction: $500,000 to $1M.

Interested contractors must submit the following via email to jarrod_brown@nps.gov by 1200 EST, January 23, 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

Contractors must be registered as a small business in SAM under the listed socio-economic categories for NAICS code 236220 to be considered.

• All costs for responding are the responsibility of the firm.
• Any future solicitation will be posted on SAM.gov.
• Include reference number 140P6426b0003 in the email subject line.