Z--Provide Replacement of Heating, Ventilation, & Air

Amendment / Modification

This amendment (0002) to solicitation 140P5126R0002 serves to issue responses to questions received from potential offerors.

• Questions and Answers are provided as attachment 0013.
• The Period of Performance is stated as 06/22/2026 to 06/21/2027.

This amendment provides clarifications that may impact proposal preparation and understanding of requirements. Bidders should review the attached Q&A for specific details.

Questions & Answers / Clarifications

This document provides responses to questions raised by potential bidders regarding Solicitation #140P5126R0002 for the Replacement of Heating, Ventilation, & Air Conditioning (HVAC) Systems at the Liberty Square Visitor Center, Fort Sumter National Historic Park.

• Structural Lift Points: No structural lift points have been identified for rigging out old equipment.
• Fire Suppression Piping: While removal of fire suppression piping is a possibility, it is not a certainty. The government will provide as-constructed plans for this piping. Overlapping work due to interference will be the responsibility of the awarded HVAC contractor.
• Laydown Area: All site material storage areas must be pre-approved post-award. An enclosed container is recommended, and a map indicates potential storage areas.
• Oak Tree Removal: If an oak tree needs to be felled for interference removal, the National Park Service (NPS) will evaluate and potentially remove it internally.
• Elevator Capacity: The personnel elevators have a rated load capacity of 2500 lbs.
• Restrooms: The contractor will be responsible for providing temporary restrooms.
• Past Performance References: While the building itself is not historic, past performance references should demonstrate experience with facilities requiring stringent temperature and humidity controls, similar to those needed for historic artifacts housed within.

This Q&A document clarifies several aspects of the solicitation, including site conditions, potential interferences, contractor responsibilities, and evaluation criteria for past performance. Bidders should review these answers carefully to ensure their proposals accurately reflect the project requirements and site constraints.

Amendment / Modification

This amendment (0001) to Solicitation 140P5126R0002, effective May 20, 2026, provides updated information and modifies evaluation factors.

Specifically, this amendment:

• Issues updated site visit information, provided as attachment 0011.

• Issues updated Section M - Evaluation Factors for Award, provided as attachment 0012.

• Attachment 0011 (Site Visit Information)

• Attachment 0012 (Section M - Evaluation Factors for Award)

• The period of performance has been updated to 06/22/2026 to 06/21/2027.

• Offerors must acknowledge receipt of this amendment. Failure to do so may result in rejection of their offer.

• The solicitation's receipt date for offers is extended. The exact new date and time are not specified in the provided pages but are indicated as extended in Item 11.

Solicitation / RFP / RFQ

This document outlines the evaluation factors for award for Request for Proposal #140P5126R0002. The government intends to award a contract based on the "best value" Evaluated Lowest Price Technically Acceptable (LPTA) proposal.

Proposals will be evaluated based on three factors:

• Factor 1 - Technical Capability and Approach (Volume I): Requires a written narrative (max 7 pages) detailing the offeror's approach to completing the work, including phasing, sequencing, management practices, and a construction safety plan. The safety plan must comply with all applicable rules and regulations and designate a responsible individual. A construction schedule is also required, showing chronological order, submittals, lead times, and accounting for site constraints.

• Factor 2 - Past Performance (Volume II): Requires submission of past performance information using the provided questionnaire. References must be for projects completed within the last five years, similar in size, scope, and complexity. Information must include project scope, cost, period of performance, and customer contact details. Past performance will be evaluated for recency, relevance, and quality. Information from CPARS may also be used.

• Factor 3 - Price (Volume III): Proposed pricing will be evaluated for fairness and reasonableness. Significant deviations from competitive pricing or the independent government estimate may indicate performance risk or a lack of understanding. Pricing will be reviewed for unbalanced line items.

• Award will be made to the responsible offeror whose proposal conforms to the solicitation's requirements and is deemed the lowest priced technically acceptable proposal.

• Proposals will be evaluated on an "Acceptable and Unacceptable" basis for technical and past performance factors.

• An offeror's proposal must receive an "Acceptable" rating under both technical and past performance to be considered for award.

• Evaluation begins with the lowest priced proposal. If deemed technically acceptable, the evaluation process ends. If not, the process continues until the lowest priced technically acceptable proposal is identified.

• Offerors must submit resumes for key personnel, demonstrating specific years of experience and relevant certifications (e.g., OSHA 30-hour for the On-Site Superintendent).

• Offerors must possess and provide proof of current and valid South Carolina Contractor State Licenses for themselves and any proposed subcontractors.

• Not explicitly stated in this section, but South Carolina Contractor State Licenses are required.

• Offerors are responsible for all costs incurred in preparing and submitting proposals.

• The Government reserves the right to reject any or all proposals.

• The Notice to Proceed date is assumed to be June 00, 2026 for scheduling purposes.

Amendment / Modification

This document provides updated information regarding a site visit for the replacement of HVAC Systems at Liberty Square Visitor Center, Fort Sumter National Historic Park.

• Site Visit Details: Provides the location (Fort Sumter Visitor Education Center at Liberty Square, Charleston, SC) and time (10:00 AM EST on Wednesday, May 27, 2026) for the site visit.

• Question Submission: All questions must be submitted electronically in writing to the Contracting Officer at edward_dingle@nps.gov no later than 3:00 PM EST on Friday, May 29, 2026. No telephonic questions will be accepted. A summary of Q&A will be provided as an amendment.

• RSVP: All parties planning to attend the site visit must RSVP no later than Tuesday, May 26, 2026, at 3:00 PM EST to the Site Visit Point of Contact.

• Site Visit Point of Contact: William J. Reilly, Chief of Facility Management, can be reached at william_reilly@nps.gov or (803) 394-4284.

• The deadline for RSVPing for the site visit is May 26, 2026.

• The deadline for submitting written questions is May 29, 2026.

• Attendance at the site inspection is considered vital for preparing a competitive quote, and failure to attend may not be used as an excuse for omissions or miscalculations in proposals.

Form / Attachment / Pricing Sheet

This document is a Standard Form 24 (Rev. 10/2023), Bid Bond. It is required when a bid guaranty is needed for an opportunity. The bond ensures that the Principal (the bidder) will execute further contractual documents and provide required bonds if their bid is accepted, or pay the Government for any costs exceeding the bid amount if they fail to do so.

• Principal: Information about the bidder, including their legal name, business address, and type of organization.
• Surety(ies): Information about the surety company or companies providing the bond, including their name, business address, state of incorporation, and liability limit.
• Penal Sum of Bond: The maximum amount the surety is obligated to pay, expressed as a percentage of the bid price or a specific dollar amount.
• Obligation: Details the conditions under which the bond is voided (i.e., successful execution of contract and provision of required bonds).
• Conditions: Outlines the requirements for the Principal and Surety.
• Signatures: Spaces for the Principal and Surety(ies) to sign and affix seals.

Bidders must complete and submit this form as part of their bid if a bid bond is required by the solicitation. Failure to provide a properly executed bid bond may result in the bid being considered non-responsive. The form requires specific information about the bidder and the surety, and the penal sum must meet the requirements outlined in the solicitation. Instructions on page 3 provide guidance on completing the form, including how the penal sum should be expressed and requirements for corporate seals and surety qualifications.

Solicitation / RFP / RFQ

This solicitation is for the replacement of the Heating, Ventilation, & Air Conditioning (HVAC) Systems at the Liberty Square Visitor Education Center, Fort Sumter National Historic Park in Charleston, South Carolina. The project involves removing existing systems and installing new ones.

• Provide all material, labor, and supervision for the replacement of HVAC systems.

• Comply with Specifications, Davis Bacon Wage Determination, and Terms and Conditions.

• No onsite work shall commence until a Notice to Proceed (NTP) is issued, which requires receipt and approval of Performance Bonds, Certificate of Liability Insurance, Safety Plan, Work Schedule, Material Submittals, and Pre-Construction Meeting.

• Type of Contract: Firm Fixed Price Contract.

• Period of Performance: 365 days from notice to proceed.

• Delivery Date: 06/21/2027.

• Estimated Value: Not explicitly stated, but the small business standard for the NAICS code 238220 is $19M.

• Proposal Submission Deadline: June 15, 2026, at 1:00 P.M. Eastern Time.

• Proposals must be submitted via email to edward_dingle@ios.doi.gov.

• Questions must be submitted in writing by May 27, 2026, at 1:00 P.M. Eastern Time.

• Evaluation Factors: Lowest Price Technically Acceptable (LPTA) basis, considering Technical Capability and Approach, Past Performance, and Price.

• Offerors must have an active SAM.gov vendor record and meet small business requirements.

• This procurement is a 100% Small Disadvantaged Veteran Owned Small Business (SDVOSB) set-aside.

• Offerors must be a small business under the identified NAICS code (238220).

• Offerors must have an active SAM.gov vendor record and no exclusions (e.g., delinquent federal debt, debarment).

• A site visit is scheduled for May 18, 2026, at 09:00 am EDT. Contractors are required to RSVP.

• Davis Bacon prevailing wages for Charleston County, South Carolina will apply.

• Performance and Payment Bonds are required (100% each).

Form / Attachment / Pricing Sheet

This document provides information regarding a mandatory site visit for the solicitation related to the replacement of Heating, Ventilation, & Air Conditioning (HVAC) Systems for the Liberty Square Visitor Center at Fort Sumter National Historic Park.

• Location: Fort Sumter Visitor Education Center, 340 Concord Street, Charleston, SC 29401.
• Date and Time: Monday, May 18, 2026, at 10:00 AM EST.
• Purpose of Site Visit: To ascertain local conditions that could affect operations and costs.
• Questions Submission: All questions must be submitted electronically in writing to edward_dingle@nps.gov no later than Wednesday, May 20, 2026, at 1:00 PM EST. No telephonic questions will be accepted. A summary of Q&A will be provided as a solicitation amendment.
• RSVP: All parties planning to attend must RSVP no later than Friday, May 15, 2026, at 2:00 PM EST.
• Site Visit Point of Contact: William J. Reilly, Chief of Facility Management (william_reilly@nps.gov or (803) 394-4284).
• Important Note: Attendance is vital, but failure to attend will not excuse omissions or miscalculations in proposals. No individual site inspections will be offered.

This document is critical for bidders to understand the physical site conditions relevant to the HVAC replacement project. It outlines the mandatory process for submitting questions and the deadline for RSVPing to the site visit. Failure to adhere to these instructions could impact a bidder's ability to submit a compliant and competitive proposal.

Form / Attachment / Pricing Sheet

This document is a Past Performance Questionnaire (PPQ) attached to Solicitation #140P5126R0002. It is intended for use by references to provide feedback on the offeror's performance for a previous or current contract. The information gathered will be used by the government in preparing their proposal for the National Park Service's HVAC Systems contract at Fort Sumter National Historic Park.

• Contract Information: Requires details of the referenced contract, including identifying number, value, period of performance, and a brief description of items provided.
• Offeror Information: Requires the name of the offeror and contact details.
• Performance Evaluation: Asks the reference to rate the contractor's performance in several areas, including:
  • Overall Performance
  • Timeliness (including ability to resolve timeliness problems)
  • Quality of Work (specifically "Quality of Shipments")
  • Overall Rating (considering requirements, schedule, and price)
• Definitions: Provides clear definitions for performance ratings (Exceptional, Very Good, Satisfactory, Marginal, Unsatisfactory, N/A).
• Comments: Provides space for detailed narrative comments for each evaluation area and general comments.

Potential bidders must ensure their references complete and submit this questionnaire by the closing date of the RFP. The feedback provided by these references will directly impact the government's assessment of the bidder's past performance, which is a crucial factor in proposal evaluation. Bidders should proactively communicate with their references to ensure accurate and favorable responses.

Form / Attachment / Pricing Sheet

This document is a "Limit on Subcontracting Worksheet" required for small business set-aside service contracts (including construction) priced at or above $150,000. It is used to report on the prime contractor's adherence to limitations on subcontracting.

• Contract Information: Includes fields for Contract Number (Solicitation: 140P5126R0002 – FOSU LISQ Heating, Ventilation, & Air Conditioning (HVAC) Systems Replacement), Prime Contractor, Current Total Contract Price, and Type of Set Aside (Total Small Business Set-Aside).
• Period of Performance: 365 calendar-days from receipt of NTP.
• Type of Service (Required Participation): Specifies the maximum percentage that can be subcontracted to non-similarly situated subcontractors. For General Construction, this is 85%.
• Participation Calculation: Sections to report amounts invoiced by the Prime Contractor, amounts paid to Similarly Situated Subcontractors (SSS), and amounts paid to Non-Similarly Situated Subcontractors (NSS). It also includes fields for calculating the Prime & SSS Participation % and % subcontracted to NSS.
• Definitions: Clarifies "Similarly Situated Subcontractor (SSS)" and provides the formula for "Limitation on Subcontracting Percentage."
• Corrective Action Plan: A section for the prime contractor to provide a written plan if the NSS % is not in compliance.

Bidders should use this worksheet to understand the subcontracting limitations applicable to this solicitation. It outlines the specific percentages required for small business set-asides and provides the framework for reporting compliance. This is crucial for ensuring that the proposed subcontracting plan meets the government's requirements.

Construction Specifications

This document contains construction specifications for various HVAC systems and components, including:

• Division 02 - Existing Conditions:

  • General Site Construction Requirements
  • Demolition & Abandonment

• Division 05 - Metals:

  • Structural Steel Framing
  • Louvers and Vents
  • Slotted Channel Framing
  • Metal Fabrications

• Division 07 - Thermal Moisture & Protection:

  • Sheet Metal Water Proofing
  • Fiberglass Batt Insulation
  • Firestopping
  • Joint Sealers

• Division 09 - Finishes:

  • Gypsum Board Assemblies
  • Suspended Acoustical Ceilings
  • Paints & Coatings

• Division 23 - Heating, Ventilating, & Air Conditioning (HVAC):

  • HVAC Air Duct Cleaning
  • Refrigerant Recovery / Recycling
  • Common Work Results for HVAC
  • Selective Demolition for HVAC
  • Common Motor Requirements for HVAC Equipment
  • General Duty Valves for HVAC Piping
  • Hydronic Piping Specialties
  • Hydronic Pumps
  • HVAC Water Treatment
  • HVAC Ducts & Casings
  • Metal Duct Fittings
  • Air Duct Accessories
  • HVAC Power Ventilators
  • Variable Air Volume Units
  • Air Outlets & Inlets
  • Gas Vents
  • Condensing Boilers
  • Air-Cooled Centrifugal Water Chillers
  • Mechanical Dehumidification Units
  • Instrumentation & Control Devices for HVAC
  • Direct Digital Control Systems for HVAC
  • Testing, Adjusting, & Balancing for HVAC
  • HVAC Insulation
  • Ductwork Insulation
  • HVAC Piping Insulation

• Division 26 - Electrical:

  • Electrical General Requirements
  • Common Work Results for Electrical
  • Low Voltage Electrical Power Conductors & Cables
  • Grounding & Bonding for Electrical Systems
  • Hangers & Supports for Electrical Systems
  • Raceways & Boxes for Electrical Systems
  • Enclosed Switches & Circuit Breakers
  • Variable-Frequency Motor Controllers
  • Fuses
  • Wiring Devices

• Division 05 - Metals: Details requirements for structural steel framing, louvers, slotted channel framing, and metal fabrications.

• Division 07 - Thermal Moisture & Protection: Outlines specifications for waterproofing, insulation (fiberglass batt, ductwork, piping), firestopping, and joint sealers.

• Division 23 - HVAC: Covers a broad range of HVAC components including ductwork, piping, valves, pumps, chillers, boilers, air handling units, controls, and testing/balancing procedures.

• Division 26 - Electrical: Details requirements for electrical systems, including general requirements, wiring, grounding, hangers, raceways, boxes, switches, circuit breakers, and identification.

This document is Volume 2 of 2 and contains detailed construction specifications for a wide array of building systems. Bidders should pay close attention to the specific divisions and sections relevant to their scope of work.

Form / Attachment / Pricing Sheet

This document is a submittal list for the "FOSU 316098: REPLACE HVAC SYSTEMS AT LIBERTY SQUARE VISITOR EDUCATION CENTER" project. It details the specific documents, reports, samples, and data that contractors must submit for review and approval at various stages of the project.

• Submittal Categories: Organizes required submissions into "Informational" and "Action" categories.
• Specification Sections: References specific sections and paragraphs within the project's technical specifications (Divisions 1-49).
• Document Types: Includes a wide range of required submittals such as:
  • Plans (Project Management, Quality Control, Waste Management, IAQ Management, UPPP, etc.)
  • Schedules (Construction Progress, Baseline, Updates)
  • Data (Manufacturer Data, Product Data, SDS, Mill Test Reports, Welding Procedures)
  • Drawings (Shop Drawings, Coordination Drawings, As-Built Drawings)
  • Reports (Test Reports, Inspection Reports, Waste Management Reports, Commissioning Reports)
  • Samples (Material Samples, Paint Draw Down Samples)
  • Certifications (Laboratory Tests, Welders' Certificates, ASME Stamp)
  • Closeout Documents (Warranties, O&M Manuals, Keys)
• Action vs. Informational: Clearly distinguishes between submittals requiring action/approval and those for informational purposes.

This submittal list is critical for bidders to understand the documentation and approval processes required for the HVAC replacement project. It outlines the specific deliverables and their associated specification references, enabling bidders to accurately plan their submittal strategy, resource allocation, and ensure compliance with project requirements. Failure to submit required documentation in the correct format and at the appropriate time could lead to project delays or non-compliance.

Form / Attachment / Pricing Sheet

This document is a price schedule for the solicitation to Replace HVAC Systems at Liberty Square Visitor Education Center in Charleston, South Carolina. It provides a breakdown of costs for various line items and requires offerors to submit pricing for both base and option line items. Failure to provide pricing for all line items may result in an unacceptable proposal.

• Lump Sum Cost Sheet: Details line items including Exterior Enclosure, Interior Construction, HVAC, Electrical, Selective Building Demolition, Site Preparation, and Site Improvements. Offerors must provide the total price for lump-sum items. For unit-priced items, both unit and extended prices are required. Costs for work not specifically listed should be included in related items.
• Cost Breakdowns Sheet: Further details cost components (Material, Labor, Equipment, Direct, Net) for each item, though all values are currently listed as 0.0.
• Instructions: Offerors must round totals and extended prices to whole dollars. In case of calculation errors, the unit price governs for extended prices, and the total of corrected amounts governs for summation errors.

This document is critical for bidders to understand the cost structure expected for the solicitation. It outlines the specific categories for which pricing must be submitted and provides instructions on how to format and calculate these prices. Bidders must ensure their proposals adhere to these pricing requirements, including providing complete pricing for all line items and following the specified rounding and error correction rules.

Construction Specifications

This document, "Division 1 Construction Specifications," outlines the general requirements and procedures for the "Replace HVAC Systems at Liberty Square Visitor Education Center" project at Fort Sumter National Historical Park. It details administrative and procedural requirements for various aspects of the construction project, including:

• Project Management & Coordination: Procedures for coordinating construction activities, submittals, RFIs, and project meetings.

• Construction Schedule: Requirements for developing, updating, and managing the project schedule, including time impact analysis.

• Photographic Documentation: Procedures for submitting existing condition and periodic construction images.

• Safety Requirements: Establishing an effective accident prevention program and ensuring a safe environment.

• Quality Requirements: Procedures for quality assurance and quality control, including testing and inspections.

• Temporary Facilities & Controls: Requirements for temporary utilities, support facilities, security, and protection.

• Indoor Air Quality Management: Procedures for managing indoor air quality during construction, including emissions and moisture control.

• Noise & Acoustics Management: Requirements for minimizing noise levels during construction operations.

• Temporary Stormwater Pollution Control: Measures to protect water quality during construction activities.

• Product Requirements: Procedures for product selection, delivery, storage, handling, and warranties, with an emphasis on environmentally preferable products.

• Execution: General procedural requirements for executing the work, including coordination with utility providers, construction layout, field engineering, and installation.

• Construction Waste Management & Disposal: Requirements for salvaging, recycling, and disposing of construction waste.

• Closeout Procedures: Administrative and procedural requirements for contract closeout, including project record drawings, submittals, inspections, warranties, and final acceptance.

• Operation & Maintenance Data: Requirements for preparing operation and maintenance manuals.

• Demonstration & Training: Procedures for instructing NPS personnel on system operation, maintenance, and training videos.

• Sustainable Design Requirements: General requirements for compliance with Federal Sustainability requirements.

• General Commissioning Requirements: Procedures for investigating, installing, and operating equipment and systems, including functional performance testing and documentation.

• Index of Drawings

• Contract Price Schedule

• Submittal List

• Closeout and Operation & Maintenance (O&M) Requirements

• Appendices A & B for Waste Management Plan and Solid Waste Disposal Summary.

Forms / Attachments / Pricing Sheets

This document contains the detailed drawings and specifications for the "Replace HVAC Systems at Liberty Square Visitor Education Center" project at Fort Sumter and Fort Moultrie National Historical Park. It outlines the scope of work, including demolition of existing systems and installation of new HVAC, plumbing, and electrical components.

• Cover Sheet (G0.0): Provides an overview of the project, including sheet index, park location, and project identification.
• General Notes (G0.1): Outlines general construction requirements, safety protocols, utility information, and site restoration.
• Site Map (G0.2): Illustrates the project location within the park.
• Structural Plans (S1.0 - S1.2): Detail structural requirements for various building sections.
• Mechanical Plans (M0.0 - M5.2): Include legends, abbreviations, demolition plans, new installation plans, details, and control diagrams for HVAC systems.
• Electrical Plans (E0.0 - E6.3): Provide electrical legends, abbreviations, demolition and new installation plans for various areas, single-line diagrams, and equipment schedules.
• Schedules (M6.0, E6.1 - E6.3): Contain detailed specifications for chillers, air handlers, pumps, boilers, mini-splits, exhaust fans, dehumidifiers, supply and return grilles, and electrical panels.

These drawings are essential for bidders to understand the full scope of work, including the extent of demolition required, the specifications for new HVAC, plumbing, and electrical installations, and the specific locations and requirements for all components. They provide the technical details necessary for accurate bidding and project execution.

Form / Attachment / Pricing Sheet

This document is a Wage Determination from the U.S. Department of Labor, Wage and Hour Division. It specifies the prevailing wage rates and fringe benefits required for various construction-related job classifications on building construction projects in Charleston County, South Carolina. This determination is applicable to federal contracts and subcontracts subject to the Davis-Bacon Act.

• General Decision Number: SC20260023
• Effective Date: 01/02/2026
• Applicable Construction Type: Building (excluding single-family homes or apartments up to 4 stories).
• Geographic Area: Charleston County, South Carolina.
• Classifications and Rates: Lists specific trades (e.g., Ironworker, Pipefitter, Bricklayer, Carpenter, Electrician, HVAC Mechanic, Laborer, Operator, Painter, Plumber, Roofer, Truck Driver, Welder) with their corresponding hourly wage rates and fringe benefits.
• Executive Order Notes: Includes information on Executive Order (EO) 13706 (Establishing Paid Sick Leave for Federal Contractors) and EO 13658 (Establishing a Minimum Wage for Federal Contractors).
• Appeals Process: Outlines the procedure for appealing wage determination decisions.

Bidders must use this wage determination to accurately calculate labor costs for their proposals. Failure to comply with these wage requirements can lead to contract non-compliance. The rates provided are the minimum required for covered workers on this project. Bidders should ensure their proposed wages meet or exceed these standards.