B08_SOW-Housing_Mechanical_Upgrades_11_Pgs.pdf

SCOPE OF WORK

KATM 341556/KATM 348544

NATIONAL PARK SERVICE

KATMAI NATIONAL PARK & PRESERVE

HOUSING MECHANICAL SYSTEM REPLACEMENTS

KING SALMON, ALASKA

4/16/2026

1. Background

The National Park Service (NPS) requires replacement and modernization of hydronic heating systems in several residential housing units located at Katmai National Park & Preserve in King Salmon, Alaska.

Existing heating systems in these units are aging and require replacement to improve reliability, serviceability, and operational efficiency. Work includes removal of existing mechanical equipment and installation of new oil-fired hydronic boiler systems and associated heating system components.

The work will occur within existing residential mechanical rooms serving government housing units. Mechanical room dimensions vary by unit and are identified within the task descriptions of this Scope of Work.

2. Objectives

The objective of this contract is to provide complete replacement of existing hydronic heating equipment and installation of new heating system components necessary to provide reliable space heating and domestic hot water service to the affected housing units.

The Contractor shall furnish all labor, supervision, materials, equipment, tools, transportation, and incidentals necessary to complete the work described in this Scope of Work unless specifically identified otherwise in the contract documents.

The work includes, but is not limited to:

• Removal and disposal of existing boiler equipment and associated mechanical components

• Installation of new oil-fired hydronic boiler systems

• Installation of indirect domestic hot water systems

• Installation of new pumps, manifolds, valves, and system accessories

• Integration with existing hydronic heating distribution systems

• System flushing, cleaning, and treatment

• Startup, testing, and commissioning of each mechanical system

All installed systems shall be fully operational upon completion of the work.

3. Contractor Responsibilities

The Contractor shall provide qualified personnel and adequate supervision necessary to ensure the quality, completeness, and timely progress of the work.

The Contractor shall be responsible for:

• Coordinating work within residential structures

• Protecting existing building finishes, fixtures, and tenant property

• Providing quality control during installation activities

• Compliance with all applicable federal, state, and local codes and standards

• Obtaining all licenses and permits required to perform the work

All work shall be performed in a safe manner consistent with applicable safety regulations and industry best practices.

4. Government Support

The National Park Service will provide reasonable access to the housing units and mechanical rooms required for performance of the work.

The Government will provide a heated staging and storage location for contractor materials and equipment during the performance period.

Government personnel will assist with coordination of housing access when necessary.

5. General Mechanical Requirements

5.1 Boiler Systems

Each housing unit shall be equipped with a new oil-fired cast iron hydronic boiler suitable for residential space heating and indirect domestic hot water production.

The boiler shall meet the following minimum requirements:

• Cast iron sectional heat exchanger

• Oil-fired burner compatible with No.1 or No.2 heating oil

• Minimum AFUE rating of 87 percent or higher

• Nominal heating capacity between approximately 105,000 and 210,000 BTU per hour depending on model size

• Aquastat temperature control

• Redundant high temperature limit safety with manual reset

• Low water cut-off safety device

• Pressure relief valve installed per manufacturer requirements

The Weil-McLain G-04 series cast iron boiler shall serve as the basis of design.

Equivalent boilers meeting the same construction and performance requirements may be submitted for approval.

5.2 Oil Burner Assembly

Each boiler shall be equipped with a Beckett oil burner suitable for residential hydronic heating applications.

The burner shall meet the following requirements:

• Compatible with No.1 or No.2 heating oil

• Adjustable combustion air

• Electronic ignition

• Flame detection safety system

The Beckett AFG oil burner shall serve as the basis of design.

Each burner shall include a Beckett GeniSys 7565 120-volt Advanced Oil Burner Control or approved equal.

The burner control shall provide:

• Electronic safety lockout protection

• Interrupted ignition capability

• Diagnostic indicators

• Service reset capability

5.3 Domestic Hot Water System

Each heating system shall include an indirect-fired domestic hot water tank connected to the boiler system.

The indirect water heater shall:

• Provide domestic hot water for the housing unit

• Include temperature and pressure relief valve

• Be piped to provide domestic hot water priority when required

5.4 Circulation Pumps

Each hydronic heating system shall be equipped with two circulation pumps installed in parallel to provide redundancy.

Either pump shall be capable of maintaining circulation for the entire heating system.

The pump configuration shall include:

• Two parallel circulation pumps

• Isolation valves on suction and discharge

• Check valves to prevent reverse flow

• Flanged or union connections for service

Acceptable pump models include:

• Grundfos MAGNA series

• Grundfos ALPHA series

Equivalent pumps meeting the same performance requirements may be submitted for approval.

5.5 Hydronic Distribution System

Existing heating distribution systems consist primarily of baseboard hydronic heating loops.

New system components shall include:

• Heating manifolds with balancing valves

• Zone valves serving heating zones

• Isolation valves for major components

• Air elimination equipment

• Expansion tank sized for system volume

5.6 Fuel Oil System Components

Each boiler fuel supply system shall include:

• Tigerloop fuel oil deaerator (or approved equal)

• Fuel shutoff valve at the burner

Fuel system components shall comply with burner manufacturer requirements and applicable fuel oil installation codes.

5.7 Glycol Heating Fluid

All hydronic heating systems shall be filled with a 50 percent propylene glycol / 50 percent water mixture suitable for closed-loop hydronic heating systems.

The glycol solution shall be an inhibited propylene glycol formulation designed for hydronic heating applications.

Prior to filling the system with glycol, the contractor shall flush the heating system to remove debris and contaminants.

The contractor shall verify glycol concentration and provide documentation to the Contracting Officer’s Representative.

5.8 Piping and Valves

All piping and fittings installed under this contract shall be new.

Copper piping shall be Type L copper or better.

All valves shall be full-port ball valves suitable for hydronic heating service.

Isolation valves shall be installed on all major components including:

• Boilers

• Pumps

• Indirect water heaters

• Air separators

• Expansion tanks

5.9 System Insulation

All newly installed hydronic piping shall be insulated using fiberglass pipe insulation with a minimum thickness of 2 inches.

Elbows shall be protected with PVC insulation covers.

All piping shall include flow direction arrows.

5.10 System Controls

Each boiler shall be equipped with a Honeywell L8148A Aquastat relay control (L8148A1017/U or approved equal).

Heating zones shall be controlled using a Taco zone control panel.

The Taco ZVC series shall serve as the basis of design.

Zone valves shall be Taco motorized zone valves or approved equal.

6. Demolition and Removal of Existing Heating Systems

The contractor shall remove existing boilers, pumps, controls, and associated piping necessary to install the new heating systems.

Existing baseboard heating distribution piping shall remain unless otherwise directed by the Contracting Officer’s Representative.

The Park reserves the right to retain salvaged equipment. Removed equipment shall be delivered to a location designated by the COR or recycled as directed. Dispose of waste materials and recycling legally outside the park. The contractor shall not use park dumpsters.

7. Installation Requirements

All equipment shall be installed in accordance with manufacturer instructions and applicable codes.

Existing venting systems and chimney connections may be reused if determined to be serviceable.

Existing fuel oil lines may be reused if determined to be serviceable.

Any damaged or unsafe components shall be replaced by the contractor.

8. Equipment Identification and Labeling

All mechanical components installed under this contract shall be clearly labeled including:

• Circulation pumps

• Zone valves

• Isolation valves

• Thermostats

Hydronic piping shall include flow direction arrows.

Zone control panels shall include permanent labels identifying each heating zone.

9. Commissioning and Performance Verification

The contractor shall perform complete startup and commissioning of each heating system.

Commissioning shall include:

• Verification of system pressure and circulation

• Combustion analysis of oil burner

• Verification of safety controls

• Verification of domestic hot water production

• Verification of proper heating zone operation

Results shall be documented and submitted to the Contracting Officer’s Representative.

10. Warranty and Closeout Documentation

All equipment and installation work shall be warranted for twelve (12) months from the date of acceptance.

The contractor shall provide:

• Equipment Operating & Maintenance (O&M) manuals

• Startup documentation

• Combustion analysis reports

• Warranty information

Documentation shall be provided in two copies.

11. Field Verification of Conditions

The contractor shall verify all field conditions prior to ordering equipment or beginning installation.

Verification shall include:

• Mechanical room dimensions

• Equipment access routes

• Fuel oil connections

• Venting and chimney connections

Failure to verify field conditions shall not be considered justification for additional compensation.

12. Description of Tasks

The contractor shall remove existing heating equipment and install new hydronic heating systems as described below.

All installations shall comply with the requirements of Sections 5 and 7 of this Scope of Work.

Base Bid – Task 1

Mechanical Upgrades Unit 138

Remove existing heating equipment and install new hydronic heating system including:

• Weil-McLain G-04 boiler

• Beckett AFG burner with GeniSys control

• Honeywell Aquastat

• Indirect domestic hot water tank

• Two parallel circulation pumps

• Taco zone valves and zone controller

• Expansion tank and air separator

• Tigerloop fuel deaerator

• System flushing and glycol refill

• Startup and commissioning

Existing unit heater shall remain.

Bid Option A – Task 2

Mechanical Upgrades Duplex Units 136 / 137

Remove existing heating equipment and install new hydronic heating system serving duplex including:

• Weil-McLain G-04 boiler sized for duplex load

• Beckett AFG burner with GeniSys control

• Honeywell Aquastat

• Indirect domestic hot water system

• Two parallel circulation pumps

• Taco zone valves and zone control panel

• Expansion tank and air separator

• Tigerloop fuel deaerator

• System flushing and glycol refill

• Startup and commissioning

Existing unit heater shall remain.

Bid Option B – Task 3

Mechanical Upgrades Unit 147

Install hydronic heating system identical to Base Bid configuration.

Bid Option C – Task 4

Mechanical Upgrades Unit 149

Install hydronic heating system identical to Base Bid configuration.

Bid Option D – Task 5

Mechanical Upgrades Duplex Units 134 / 135

Install hydronic heating system serving duplex including boiler sized for duplex heating load and components listed in Section 5.

Bid Option E – Task 6

Mechanical Upgrades Unit 148

Install hydronic heating system identical to Base Bid configuration.

13. Preparation of Cost Proposal

Cost proposals shall consist of:

Base Bid – Task 1

Bid Option A – Task 2

Bid Option B – Task 3

Bid Option C – Task 4

Bid Option D – Task 5

Bid Option E – Task 6

The Base Bid and each Option shall be submitted as a separate lump sum cost.

14. Period of Performance

The anticipated period of performance for the resultant contract is from June 1, 2026 through October 31, 2026.

15. Schedule of Work and Submittals

The Contractor may perform the work daily between 7:00am -5:00pm, beginning on the date of award through October 31, 2026. The Contractor shall perform the work Sunday through Saturday of any week in the performance period. The Contractor shall provide the Park with two weeks’ notice prior to the anticipated dates of presenting themselves at the work site. Any deviation from this schedule shall be approved by the Contracting Officer in advance.

All efficiency testing report forms, MSDS’s and equipment/parts operation and maintenance manuals, 2 copies of each, will be delivered to the COR within 10 business days of completion of installation.

POINT OF CONTACT:

Contracting Officer’s Representative (COR) for Technical Support:

Nick Nicosia – Contracting Officer’s Representative Katmai National Park & Preserve

P.O. Box 7 King Salmon, AK 99613 nick_nicosia@nps.gov Tel.: (907) 469-0648

Contracting Office for Contractual Support:

Janet Milson – Contracting Officer Department of the Interior janet_milson@ios.doi.gov Tel: (253) 322-1378

SUBMIT INVOICE(S) TO:

Submit the original invoice to the Invoice Processing Platform (IPP), https://www.ipp.gov/ and a copy, via email, to the COR. Monthly Progress Payments will be made on this Contract based on estimates of work accomplished, which meet the standards of quality established under the contract. Partial Payment will not be authorized for this contract.

Contracting Officer’s Authority:

The Contracting Officer is the only person with the authority to act as agent of the Government under this contract.

Only the Contracting Officer has authority to:

(1) direct or negotiate any changes in the Statement of Work or specifications;

(2) modify or extend the period of performance;

(3) change the delivery schedule; or

(4) otherwise change any terms and conditions of this contract.

The Contracting Officer is the only person authorized to make or approve any changes in any of the requirements of this contract and not withstanding any provisions contained elsewhere in this contract, the said authority remains solely in the Contracting Officer. In the event the Contractor makes any changes at the direction of any person other than the Contracting Officer, the change will be considered to have been made without authority and no adjustment will be made in the contract price to cover any increase in costs incurred as a result thereof.

mailto:nick_nicosia@nps.gov https://www.ipp.gov/

ATTACHMENTS:

Attachment 1: OTHER-KATM-341556 Site Photos.pdf Attachment 2: OTHER-KATM-341556 CM-16 Submittal Form.doc Attachment 3: OTHER-KATM-341556 General Specs 01 00 00.pdf

Attachment 4: OTHER-KATM-341556 FAA Housing Site and Key Map.pdf