HVAC Duct Cleaning

Amendment / Modification

This amendment (0003) to Solicitation ACQR6124130R, dated 04/15/2026, provides answers to contractor Requests for Information (RFIs).

• RFI Questions & Answers: Addresses a question regarding the total number of berthing rooms.

• The amendment clarifies that the total number of berthing rooms is 85, based on confirmation with HVAC equipment inventory and the Building Manager for Bldg. 560. This supersedes previous assumptions or information that may have indicated 170 berthing rooms, and corrects discrepancies noted in Enclosures 1, 3, and 4.

• No changes to proposal deadlines or submission requirements are indicated in this amendment.

Amendment / Modification

This amendment announces a site visit and extends the proposal due date.

• Site Visit: A site visit has been scheduled for interested offerors to inspect the site and understand the scope of requirements. Attendance is optional.

  • Date: Monday, 04 May 2026
  • Time: 10:00 EST
  • Location/Meeting Point: 1st Floor of Conference Room in BLDG 135
  • Offerors planning to attend must submit attendee names to Chris Judge at christopher.g.judge.civ@us.navy.mil no later than 16:00 EST on Wednesday, 29 April 2026.
  • A maximum of two representatives per offeror are permitted.

• Proposal Deadline: The deadline for proposal receipt has been extended.

  • Original Proposal Deadline: 04 MAY 2026 10:00 EST
  • Revised Proposal Deadline: 11 MAY 2026 16:00 EST

The proposal deadline has been extended to allow offerors adequate time to incorporate information gathered from the site visit.

Amendment / Modification

This amendment addresses Requests for Information (RFIs) related to the solicitation.

• RFI Questions & Answers: Provides responses to six vendor questions.
  • Access and Escorts: Contractor must maintain independent DBIDS access for all personnel. Escorts for berthing units require a 48-hour advance request.
  • Access Doors and NADCA Standards: If existing ductwork lacks sufficient access panels, it can be cut and patched using specified materials. This is not treated as a government-funded change order.
  • Mechanical System Status: The Government has no knowledge of modifications to mechanical systems (AHUs, FCUs in Buildings 534 and 560) beyond routine maintenance.
  • Fire Alarm Coordination: The Government's Engineering Technician will coordinate with in-house Fire Technicians for fire alarm/smoke detection system shutdowns and restarts.
  • Working in Occupied Spaces: Standard working hours are 0800-1630 Monday-Friday, with exceptions for Government Holidays. Specific "quiet hours" are not defined beyond standard hours.
  • Site Visit: No site visit is currently planned.

This amendment does not appear to modify proposal deadlines or submission requirements, but bidders should review the RFI responses for any impact on their understanding of the requirements.

Forms / Attachments / Pricing Sheets

This document contains mechanical demolition plans for the "Repairs to Submarine A School BQ 534" project. It details the removal of existing mechanical systems, including ductwork, piping, fan coil units, and associated equipment across multiple floors (First through Fourth, and Penthouse).

• Demolition Plans (MD-101 through MD-108): Floor plans illustrating areas and specific components to be removed.
• Enlarged Plans (MD-401 through MD-403): Detailed views of specific areas like the lobby, laundry room, and mechanical room.
• Piping & Ductwork Plans (M-101 through M-111): Plans showing new ductwork and piping installations.
• Mechanical Details (M-501 through M-504): Specific construction details for various components and installations.
• Control Diagrams (M-701 through M-703): Diagrams illustrating the control systems for mechanical equipment.
• Schedules: Equipment schedules (e.g., Fan Schedule, Unit Schedule, Heat Pump Schedule) providing specifications for installed components.

This set of drawings is crucial for any bidder involved in the mechanical aspects of the "Repairs to Submarine A School BQ 534" project. It outlines the scope of demolition work required for existing mechanical systems and provides detailed plans for new installations. Bidders must review these documents to understand the existing conditions, the extent of removal, and the specifications for new mechanical systems, including ductwork, piping, VRF systems, and control systems. This information is essential for accurate bidding and project execution.

Form / Attachment / Pricing Sheet

This document is a "Question Sheet" intended for vendors to submit questions regarding Solicitation No. N40085-26-R-XXXX for Building 560 & B534 Duct Cleaning at Naval Submarine Base New London, Groton, CT.

• Fields for Company Name, Address, Phone Number, FAX Number.
• Fields for Point of Contact (POC) Name and E-mail address.
• A structured table with columns for Question Number (Q#), Page #, Section, Paragraph # (Para #), and the QUESTION itself.

This form provides the official mechanism for potential bidders to ask clarifying questions about the solicitation requirements. Vendors must use this sheet to submit their inquiries, which will likely be addressed by the government in a subsequent Q&A or clarification document. It is crucial for bidders to utilize this process to ensure a clear understanding of the solicitation before submitting a proposal.

Statement of Work (SOW) / Performance Work Statement (PWS)

This document outlines the requirements for comprehensive inspection, cleaning, sanitizing, and documentation of HVAC system components in accordance with the ACR NADCA Standard for Assessment, Cleaning, and Restoration of HVAC Systems.

• HVAC Components to be Serviced:

  • Air Handling Units (AHUs)
  • Fan Coil Units (FCUs)
  • Rooftop Units (RTUs)
  • Main air distribution ductwork
  • Branch ductwork systems
  • Return and discharge diffusers
  • Dedicated bathroom exhaust ventilation components
  • Make-up air systems
  • All other connected HVAC components

• Contractor Responsibilities:

  • Cleaning: Removal of visible surface contaminants and deposits from interior surfaces of the air distribution system.
  • Sanitizing: Comprehensive sanitizing of AHUs, FCUs, and air duct systems.
  • Documentation: Provision of before and after color photographs of completed work.

• Building Specifics:

  • Building 534: A four-deck facility with north and south wings, housing approximately 230 birthing rooms. Includes ventilation ductwork in stairways. Mechanical drawings from a 2012 renovation are provided.
  • Building 560: A seven-story barracks facility housing approximately 170 berthing units. Includes ventilation ductwork in north and south stairwells. Current mechanical drawings are provided.

• Exhaust Fans/Ducts: Bathroom exhaust fans and all attached duct work, including return air ducts, will be cleaned and sanitized for both buildings.

• All work must be performed in strict accordance with project specifications and applicable industry standards.

• Not explicitly stated, but implied to cover both Building 534 and Building 560.

• Tools & Materials: Contractor shall supply all necessary tools and materials.

• Personnel: A single individual may serve as Site Superintendent/SSHO/QC Manager, provided they possess all required qualifications and training. No training is provided by the Government.

• Safety Protocol: All energized equipment must be locked out/tagged out (LOTO) and de-energized before work begins.

• Access: Scheduling of access to rooms and roofs will be coordinated with building managers.

• Alarms/Sensors: Deactivation of alarms or sensors will be coordinated by the engineering technician.

• Filters: Government will not supply filters. Existing filters are to be cleaned and reinstalled. Any filters deemed end-of-life are to be itemized. A list of filters needing replacement will be provided to the Navy for coordination.

• Hazardous Material Analysis: No asbestos or lead paint survey reports are included. If suspected, the Contractor must stop work, notify the OIC, and provide a cost estimate for removal upon positive identification.

Statement of Work (SOW) / Performance Work Statement (PWS)

This Statement of Work (SOW) outlines the requirements for HVAC Air Duct Cleaning and Sanitizing services for Barracks HVAC Systems at the SUBMARINE BASE NEW LONDON.

• Cleaning of main air duct trunks and air duct branches.

• Disinfection of Air Handling Units (AHUs), Fan Coil Units (FCUs), and all air duct systems.

• Removal of visible surface contaminants and deposits from within the HVAC system, return, and discharge diffusers.

• The HVAC system includes interior surfaces of the facility's air distribution system for conditioned spaces and occupied zones, main distribution air ducts, branch air ducts, dedicated bathroom exhaust ventilation components, and make-up air systems.

• AHUs are to be cleaned; room indoor AC evaporators are excluded.

• Provide before and after color pictures of AHUs, FCUs, RTUs, and the air duct system.

• Verification of cleanliness through inspection and/or testing in accordance with specified items and current NADCA Standards.

• Location of Job: SUBMARINE BASE NEW LONDON.

• Period of Performance: Complete work in less than 90 calendar days after contract award.

• Submittals: Extensive list of submittals required prior to and during construction, including QC Plan, schedules, safety plans, insurance, warranties, and record drawings. Government approval is required for many submittals (indicated by 'G').

• Quality Control: A Quality Control (QC) Manager is responsible for inspecting and maintaining quality control. The QC Manager must have at least three years of experience and fluent English communication skills.

• Safety: Compliance with EM 385-1-1 Safety and Health Requirements is mandatory. Specific requirements for Contractor Accident Prevention Plan (APP), Activity Hazard Analyses, Subcontractor Safety Requirements (EMR and DART rates), Weight Handling Equipment (WHE) accidents, and regulatory compliance are detailed.

• Environmental: Compliance with federal, state, and local environmental regulations. Procedures for handling unforeseen hazardous conditions and waste management (at least 50% diversion from landfill) are outlined.

• Insurance: Required insurance coverage includes Comprehensive General Liability, Automobile Liability, Worker's Compensation, and Employer's Liability.

• Work Hours: Standard work hours are 0800 to 1600 Monday through Friday, with advance approval required for work outside these hours.

• Asbestos/Lead Paint: No specific survey reports are included, but contractors must stop work and notify the OIC if suspected materials are encountered.

Form / Attachment / Pricing Sheet

This document is a NEPA Environmental Checklist (EC) used to determine the environmental requirements associated with a proposed project. It requires completion of the first two pages, attachment of a site map and a SOW or 1391, and submission to the PWD Environmental Division (EV) at least 15 days prior to the project's scheduled start date. The environmental review is valid for one year.

• General Project Information: Details about the activity, point of contact, project name (Barracks HVAC Air Duct Cleaning and Sanitizing), project location (Bldgs. 534, 560, and 559), and project type (Cleaning).
• Planning Questions: Addresses project area, impervious surfaces, storm water and sanitary sewage management, and actions in water or agricultural areas.
• Design Related Questions: Inquires about tree removal, emission-generating equipment, petroleum storage tanks, oil water separators, excavated material relocation, by-product generation (e.g., hazardous waste), de-watering, pipe connections, wastewater discharge, UST/AST, refrigerants, shoreline/wetland disturbance, coastal zone impact, pesticide use, and pile driving.
• Operational Related Questions: Asks about emission-generating equipment installation and new processes or maintenance activities.
• Summary of Environmental Requirements: Outlines planning, design, and operational requirements related to NEPA, endangered species, marine mammals, wetlands, navigable waters, agriculture, tree mitigation, coastal zone, cultural resources, air emissions, construction emissions, installation restoration, and petroleum contamination. It also details requirements for storm water management, de-watering, beach/dune management, and spill prevention.
• Additional Requirements or Comments: Specifies that the proposed action falls under CATEX #8 (Routine repair and maintenance) and does not require further NEPA analysis, but full implementation of environmental requirements is necessary. It details specific requirements for compliance with federal, state, and local regulations, waste management, HAZMAT surveys, refrigerant handling, de-watering, wastewater discharge, SDS submission, and exterior storage.

This checklist identifies potential environmental compliance requirements, potential project impacts, and associated timelines. Bidders should review these requirements to understand potential constraints, necessary permits, consultations, and specific handling procedures (e.g., for waste, refrigerants, or wastewater) that may affect project execution, cost, and schedule. It highlights that the project is considered routine repair and maintenance under a Categorical Exclusion (CATEX) but still mandates adherence to all identified environmental regulations and procedures.

Statement of Work (SOW)

This Statement of Work outlines the requirements for HVAC Air Duct Cleaning and Sanitizing services for Barracks HVAC System at SUBMARINE BASE NEW LONDON, Building 560.

• Cleaning and sanitizing of the main distribution air duct, branch air duct, dedicated bathroom exhaust ventilation components, and make-up air systems.
• Cleaning of all room Fan Coil Units (FCUs) and Air Handling Units (AHUs).
• Cleaning of the main air duct trunk and air duct branches.
• Disinfection of AHUs, FCUs, and all air ducts.
• Removal of visible surface contaminants and deposits from within the HVAC system, return, and discharge diffusers.
• Verification of cleanliness through inspection and/or testing in accordance with NADCA Standards.
• Provision of before and after color pictures of the AHU, FCU, and air duct system.

Complete work in less than 90 calendar days after contract award.

• Asbestos Containing Material: Not specified as present (checkbox unchecked).

• Lead Based Paint: Present (checkbox checked).

• Environmental: Compliance with federal, state, county, and local environmental regulations is required. Hazardous materials must be approved prior to use, with a minimum of 15 calendar days for processing. Prohibited materials include radioactive materials, asbestos, mercury, PCB, di-isocyanates, and lead-based paint, with potential exceptions considered by the Contracting Officer.

• Waste Management: Contractor must reduce, recycle, or salvage at least 50% of construction waste. Disposal of all waste materials is the contractor's responsibility. Contact Installation Recycle for services and removal. Weights of all waste must be reported.

• Quality Control: A Quality Control (QC) Manager is responsible for inspecting and maintaining quality control. The QC Manager must have at least three years of experience and fluent English communication skills. A QC Plan must be submitted for Government review.

• Submittals: Various submittals are required, including a QC Plan, construction schedule, environmental protection plan, schedule of prices, insurance certificates, safety submittals, and others. Some submittals require Government approval.

• Safety: Compliance with EM 385-1-1 Safety and Health Requirements is mandatory. This includes developing a Contractor Accident Prevention Plan (APP) and Activity Hazard Analyses. Subcontractors must meet specific Experience Modification Rate (EMR) and OSHA DART Rate requirements. A Site Safety and Health Officer (SSHO) is required.

• Work Hours: Standard work hours are 0800 to 1600 Monday through Friday. Advance approval is required for work outside these hours.

• Insurance: Specific insurance coverages are required, including Comprehensive General Liability, Automobile Liability, Worker's Compensation, and Employer's Liability.

• Nadca Standard 2021.pdf

Form / Attachment / Pricing Sheet

This document, "ATTACHMENT A: ADDITIONAL ATTACHMENTS FOR THE RFQ CORPORATE EXPERIENCE FORM N40085-22-R-2717", is a corporate experience form that offerors must complete as part of their proposal submission. It is intended to gather information about the offeror's past performance and corporate experience relevant to the solicitation.

• Offeror Information: Fields for Offeror name, Project Title, Contract Number, DUNS Number, Location.
• Project Details: Award Date, Completion Date, Original Value, Final Value, Type of Contract (Fixed Price or Cost Reimbursable), and a Project Description.
• Customer Contact Information: Name, Organization, Telephone Number, FAX Number, and Email Address.
• Note: Offerors may use an alternative format, but all the listed elements must be included.

This form is crucial for bidders to detail their relevant past projects and client contacts. The information provided will be used by the government to assess the offeror's corporate experience and past performance, which is likely a significant evaluation factor. The document also references the use of the NAVFAC Form PPQ (Attachment B) for past performance evaluations and clarifies when to submit CPARS versus the PPQ. It also provides instructions on how to submit PPQs and contact information for questions.

Other / Unclassified

This document is a U.S. Department of Labor Wage and Hour Division "Register of Wage Determinations Under the Service Contract Act." It lists various occupations and their corresponding minimum hourly wage rates and fringe benefits applicable to contracts in Southeastern Connecticut County, Connecticut. The document includes specific wage rates for numerous job titles across different sectors, such as administrative support, automotive service, health occupations, technical occupations, and more.

This document is crucial for potential bidders as it establishes the minimum wage and fringe benefit requirements for service employees working on covered contracts. Bidders must use this information to accurately calculate labor costs when preparing their proposals, ensuring compliance with federal regulations. Failure to adhere to these wage determinations can lead to bid disqualification or contract non-compliance. The document also outlines provisions for paid sick leave, vacation, and holidays, which are important considerations for overall compensation and employee benefits.

Form / Attachment / Pricing Sheet

This document is "Enclosure_6 ACR NADCA Standard.pdf", which is the 2021 Edition of The NADCA Standard for Assessment, Cleaning, and Restoration of HVAC Systems. It provides minimum performance and procedural requirements for HVAC system assessment, cleaning, and restoration.

• Scope: Applies to assessment, cleaning, and restoration of HVAC component airside surfaces. It excludes cleaning of non-ducted ceiling plenums and mechanical repair of electrical/pneumatic components, high-pressure vessels, gas/oil controls, or OEM preventative maintenance.
• Application: Provides guidance for industry professionals, service providers, building owners, and managers.
• Qualifications: Requires personnel to be properly trained and qualified. Recommends an Air Systems Cleaning Specialist (ASCS) or equivalent for oversight.
• Limitations: Does not address all hazards; users must rely on Authorities Having Jurisdiction (AHJ).
• Sections: Covers Inspections, Work Plans, Engineering Controls, Cleaning and Restoration Procedures, and Cleanliness Verification and Documentation.
• Key Procedures: Details methods for inspection, work plan development, engineering controls (including containment levels), cleaning techniques (dry and wet), and verification methods (visual inspection, surface comparison test, NADCA vacuum test).

This document establishes the industry standard of care for HVAC cleaning and restoration. Bidders proposing services related to HVAC cleaning, assessment, or restoration must adhere to these standards. Understanding these requirements is crucial for developing accurate proposals, ensuring compliance, and meeting client expectations. It outlines the expected quality, safety protocols, and verification methods for such services.

Form / Attachment / Pricing Sheet

This document is a "Legend" sheet, providing a comprehensive list of symbols and abbreviations used throughout the mechanical drawings (M-series) for the project. It serves as a reference guide for understanding the various components, systems, and notations depicted in the plans.

• Symbols: Detailed graphical representations for mechanical equipment (e.g., fans, dampers, valves, coils, heaters), piping components (e.g., unions, flanges, vents), and ductwork elements.
• Abbreviations: Definitions for common acronyms and shorthand used in HVAC and plumbing systems (e.g., CFM, BTUH, PSIG, AHU, FCU, SOW, PWS).
• General Notes: Instructions and standards for piping and equipment installation, including requirements for alignment, spacing, insulation, and protection of open pipe ends.
• Revisions: A log tracking changes made to the drawings.

This document is crucial for any bidder to accurately interpret the mechanical drawings. Understanding the symbols and abbreviations is essential for comprehending the scope of work, the types of equipment to be installed, the layout of ductwork and piping, and the overall system design. It directly impacts the ability to prepare a compliant and accurate bid for mechanical systems.