AMENDMENT -N00253-22-R-0033-0002.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

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.

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

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

This Amendment is being issued to incorporate Revised SOW w ith PPI answ ers and Questions and to attach a revised draw ing of attachment - Bldg. 1074 HVAC Locations and a new attachment - Bldg. 1074 FIre and STC Rating Draw ing and Design floor loads.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 13

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

16C. DATE SIGNED

BY 04-Oct-2022

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street , County, State and Zip Code) X N0025322R0033

X 9B. DATED (SEE ITEM 11)

07-Sep-2022

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer 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 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram 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 telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

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

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

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

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, 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)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

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

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

04-Oct-2022

CODE

NAVAL UNDERSEA WARFARE CENTER

ATTN: KITTY CANDELARIA

KITTY.CANDELARIA@NAVY.MIL

610 DOWELL STREET, BLDG 206

KEYPORT WA 98345

N00253 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

N0025322R0033

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00 10 00 - SOLICITATION

The following have been added by full text:

REVISED SCOPE OF WORK

I. Statement of Work:

NAVSEA NUWC Division, Keyport has a requirement to replace a roof top air-handling unit (AHU) and install five ductless split unit systems located at bldg. 1074. The project will require the contractor to remove and replace existing HVAC equipment; provide and install five (5) new ductless split unit systems, install electrical circuits, plumbing, and core drilling as required.

The Contractor shall provide labor, material, and equipment, as required, to accomplish the following work in accordance with the statements herein:

Remove existing 6-ton roof top unit (RTU) and replace with new 8-ton RTU, provide and install five

(5) new ductless split units systems, install new air diffusers, and air balance existing duct system supplied by the newly installed AHU. The new AHU will supply conditioned air to server room.

All work must be coordinated through the Engineering Technician (ET) Daniel Timmons. A preconstruction meeting will take place two weeks prior to the start of construction, the PM, Customer, Contractor and all required subs will be in attendance at a minimum

II. Attachments and References:

1. Attachments:

A. Attachment 1 – Material/Equipment In-Place List Rev. 1 B. Attachment 2 – Bldg. 1074 Duct Work C. Attachment 3 – Bldg. 1074 Exterior Wall Detail D. Attachment 4 – Bldg. 1074 HVAC Locations -REV001- 9/30/22 E. Attachment 5 – Bldg. 1074 Photos F. Attachment 15– Bldg. 1074 Fire and STC rating drawings and design floor loads

2. References:

A. Naval Base Kitsap (NBK) Instruction 11300.1 Utilities and Facilities Outages B. EM-385-1-1 Safety and Heath Requirements Manual C. NAVFAC P307 Weight Handling Program Management Manual D. NAVSEA Safety Requirements for Contractors and Subcontractors, April 2021, REV O.

E. NAVSEA Guide to Environmental Compliance Requirements for Contractors and

Subcontractors, October 2019 F. Naval base Kitsap (NBK) Instruction 11210.1A Road Closure/Disruption Coordination G. Unified Facilities Guide Specifications (UFGS) 23 81 00 Decentralized Unitary HVAC

Equipment H. Unified Facilities Guide Specifications (UFGS) 23 23 00 Refrigerant Piping

III. Submittals:

1. Electronic copies of the below listed submittals shall be submitted to the ET three (3) weeks prior to any field work being started, and shall be approved by the respective government authority prior to commencing work:

A. Material submittals B. Project Schedule C. Safety Plan D. Activity Hazard Analysis (AHA) E. Accident Prevention Plan (APP) F. Safety Data Sheet (SDS)

G. Hot Work permit H. Excavation Permit I. Environmental Protection Plan J. Waste Information Specification (WIS or WGR) K. Quality Control Plan L. Contractor Hazardous Material Inventory Sheet (CHMI)

2. The Contractor shall provide their submittal register to the ET within three (3) weeks after contract award.

3. Proposed equipment specifications shall be submitted to the ET for review and written approval prior to commitment to purchase.

4. Schedules: Post award, the Prime Contractor shall submit an electronic project schedule to the ET three (3) weeks prior to schedule start dates. Project schedules shall include a three (3) week projection of work.

5. Required outages shall adhere to Ref (1) and routed through the ET for information on scheduling.

The ET is not responsible for outage coordination, obtaining signatures, or vetting outage requests, including Hot Work permits or Fire Alarm outages. Contractor pricing shall include all Contractor support and associated costs in their proposal.

6. All submittals requiring NBK Bangor Environmental signature shall be routed through the ET for review and acceptance. The ET shall be copied on all emails sent to Environmental. No work shall begin until all required Environmental forms have been submitted and approved.

7. Approved/signed/accepted outages, excavation permits, Hot Work permits, environmental submittals, Prime Contractor Submittal Registers, and all other accepted/approved submittals not mentioned herein shall be sent electronically to the ET for project filing.

8. All contractors working this project are subject to labor interviews and shall provide the information requested per “Labor Standards Interview” form 1445 (Rev. 12-96). The ET will conduct these interviews randomly during the performance of the work.

IV. Products:

1. All materials and products provided by the Contractor in the performance of this contract shall be new, first quality, and manufactured and assembled in the United States of America and shall meet or exceed the manufacturer’s specifications.

2. The materials and/or products listed here are required for the completion and operation of this project, but may not be all inclusive.

A. Roof Top Unit, 8 ton (RTU)

Standard efficiency 8 ton packaged gas/electric convertible air handling unit.

5 year limited compressor warranty 5 year limited heat exchanger warranty 1 year limited parts warranty Anti-short cycle timer Colored and numbered wiring Convertible Airflow Crankcase heater Direct drive plenum fan Easy access low voltage terminal board (LBT) Filters are standard size Foil-faced and edge captured insulation High pressure control IAQ dual sloped, plastic, removable, reversible drain pan Liquid line refrigerant drier Low pressure control Phase loss protection Phase motor Phase reversal protection Phase balance protection Quick access panels Provide and install new thermostats complete with wiring.

LON Talk Controller compatible.

B. Ductless Split Unit

The outdoor condenser units shall be mounted similar to the existing AC units on the exterior of the west wall, including a service disconnect switch and electrical power, hardware mounting configuration, and all required piping. Each zone shall be independently controlled utilizing remote controllers.

The indoor unit shall be factory assembled, wired and run tested. Contained within the unit shall be all factory wiring, internal piping, control circuit board and fan motor. The unit shall have a self‐diagnostic function, 3‐minute time delay mechanism an auto restart function, an emergency operation function and a test run switch. Indoor unit and refrigerant pipes shall be charged with dry air before shipment from the factory.

Unit Cabinet: The casing shall have a white finish. Multi directional drain and refrigerant piping offering four (4) directions for refrigerant piping and two (2) directions for draining shall be standard. There shall be a separate back plate which secures the unit firmly to the wall.

Fan: The indoor unit fan shall be an assembly with a line‐flow fan direct driven by a single motor. The fan shall be statically and dynamically balanced and run on a motor with permanently lubricated bearings. A manual adjustable guide vane shall be provided with the ability to change the airflow from side to side (left to right). A motorized air sweep flow louver shall provide an automatic change in airflow by directing the air up and down to provide for uniform air distribution. The indoor unit fan shall consist of three (3) speeds, High, Medium and Low.

Filter: Return air shall be filtered by means of easily removed catechin and enzyme filters.

Coil: The evaporator coil shall be of nonferrous construction with pre‐coated aluminum strake fins on copper tubing. All tube joints shall be brazed with PhosCopper or silver alloy. The coil shall be pressure tested at the factory. A condensate pan and drain shall be provided under the coil.

Electrical: The electrical power of the unit, supplied from the outdoor unit shall be 208 volts or 230 volts, 1 phase, 60 hertz. The system shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts. The indoor unit shall not have any supplemental electrical heat elements.

Control: Room 131 shall be hardwired and all other units This unit shall have a wireless controller to perform input functions necessary to operate the system. The controller shall consist of a Power On/Off switch, Mode Selector, Temperature Setting, Timer Control, Fan Speed Select and Auto Vane Selector. Temperature changes shall be by 2°F increments with a range of 65°F to 87°F. There shall be a 24 hour On/Off timer. The microprocessor located in the indoor unit shall have the capability of sensing return air temperature and evaporator coil temperature, receiving and processing commands from the wireless controller, providing emergency operation and controlling the outdoor unit. The control voltage between the indoor unit and the outdoor unit shall be 208 volts or 230 volts AC. The system shall be capable of automatic restart when power is restored after power interruption.

The system shall have auto-change over between heating and cooling. Control system shall control the continued operation of the air sweep louvers, as well as provide on/off and system/mode function switching.

Outdoor Unit General: The outdoor unit must be designed specifically for use with the indoor units. The unit shall be able to provide cooling operation at ‐10°C (14°F) and heating operation at ‐15°C (5°F). The outdoor unit shall be completely factory assembled, internally piped and wired. Each unit must be run tested at the factory.

Unit Cabinet: The casing shall be zinc coated steel with acrylic or polyester coating for corrosion protection.

Fan: The unit shall be furnished with a direct drive propeller type fan. The fan motor shall have inherent protection, be permanently lubricated bearings. The fan motor shall be mounted for quiet operation. The fan shall be provided with a raised guard to prevent contact with moving parts. The outdoor unit shall have horizontal discharge airflow.

Coil: The condenser coil shall be of nonferrous construction with pre‐coated aluminum strake fins on copper tubing. The coil shall be protected with an integral metal guard. Refrigerant flow from the condenser shall be controlled by means of a linear expansion valve (LEV) metering orifice. The linear expansion valve shall be controlled by a microprocessor controlled step motor.

Compressor: The compressor shall be mounted to avoid the transmission of vibration.

Electrical: The electrical power of the unit shall be 208 volts or 230 volts, 1 phase, 60 hertz. The unit shall be capable of satisfactory operation within voltage limits of 198 volts to 253 volts. Pulse Amplitude Modulation shall be incorporated into electrical circuit. The outdoor unit shall be controlled by the microprocessor located in the indoor unit. The control voltage between the indoor unit and the outdoor unit shall be 208 volts or 230 volts AC.

Five zones, 10 indoor air handling units Each zone shall be independently controlled utilizing IR remote controllers with the exception of room 131 which must have a hard wired thermostat.

All units must be capable of being controlled by a hard wired thermostat.

Provide unit with an Energy Star label.

C. Line Set Covers Weather resistant UV stabilized ¼ turn no-rust cam screws

V. Quality Control:

1. The Contractor shall be a licensed contractor in the state of Washington. All components and services are to be installed per manufacturer’s specifications by trained technicians with a minimum of five (5) years’ experience, who specialize in the type of work indicated herein.

2. The Contractor shall perform all work according to accepted standards, safety procedures, and applicable laws, regulations, codes, and standards to include the Unified Facilities Guide Specifications (UFGS), Unified Facilities Criteria (UFC), International Building Code (IBC), International Mechanical Code (IMC), International Plumbing Code (IPC), National Electrical Code (NEC), National Electrical Safety Council (NESC), and National Fire Protection Association

(NFPA).

3. The Contractor shall be responsible for all quality control, inspections, and tests required in the completion of this project. The Contractor shall obtain all approvals except those required for field installations, field applications, and post-field tests, prior to delivery of materials and equipment to the project site unless otherwise specified. The Contractor shall arrange for tests and inspections where and when required as defined in the approved Quality Control Plan.

4. Contractor shall verify all dimensions of all equipment to ensure that all access clearances can be met.

5. The contractor is responsible for providing a complete and useable system including providing manufactures manuals, specifications, any field tests, wiring diagrams and as- built prints (red line drawings) as necessary.

VI. Execution: (general)

1. All approved project packages shall be kept on the jobsite and all employees shall be aware of its contents. Current, up-to-date Site Specific Activity Hazard Analysis (AHA) forms shall be available for review, if applicable. The Contractor shall inform all employees how to contact Base Emergency Services as approved in the contract submittal approvals.

2. Scheduling: The Contractor shall schedule work to cause the least amount of interference with station operations. The government will attempt to provide the Contractor 24 hours’ notice prior to work interruptions due to unscheduled/emergent operational requirements.

3. Protection of Government Property: The Contractor shall use every means at their disposal to prevent damage to government owned property during the execution of work. If government property is damaged, the Contractor shall contact the ET immediately and stop work until the issue is resolved.

4. Delivery, handling, storage, and protection of products to, and at the project site: Inspect for damages, store in a clean dry place, and protect from construction traffic. Handle carefully to avoid damage to components, enclosures, and finish.

5. Close Out: Upon completion of work, the site shall be left free of any and all debris, dust, and chips generated by work throughout the construction area.

6. Access to building 1074 is limited to cleared personnel and vehicles. Escorts are required for access to bldg. 1074. The Government will provide escorts

7. Furnish the ET with a list identifying personnel and vehicles requiring access.

8. Disposal of any material resulting from demolition shall be per applicable Environmental regulations, including all documentation (Waste Designation Tables, WIS forms, Waste Generation Reports (WGR), etc.) and documented in accordance with Ref (E)

9. Contractor shall locate all utilities prior to starting any excavation work.

10. Contractors performing a Weight Handling Evolution shall adhere to Ref (C) and (D).

11. Contractors utilizing lifting and handling equipment shall adhere to Ref (C) and (D).

12. The ET shall be contacted to coordinate access for job walks, site visits, and scheduling of work.

13. Completion Time Frame: The project is to be completed within 180 days after award.

VII. Bldg. 1074 General

1. Safety and Security Brief

A. A Bldg. 1074 Security Brief is required for the contractor’s complete crew before any work can begin. The brief is approximately 15 minutes and is provided in Building 1074. It can be coordinated through the Engineering Technician with minimum of three (3) days advanced notice.

B. Contractors will be escorted at all times while working in bldg. 1074. NUWC Keyport will provide all escorts based on the contractors approved schedule. Government can support escorts for contractor to work in two distinct areas of the building at the same time.

2. Smoking A. Smoking is only permitted in designated smoking areas.

3. Delays A. Contractor operations are subject to reasonable delays, suspensions, and/or restrictions because of emergencies, alerts, drills, equipment movements and other such activities.

4. Flame Producing Devices

A. Matches, lighters, and other spark producing devices are not allowed without a Hot Work permit.

5. Portable Electronic Device(s) (PED) A. PED is defined as a portable electronic device having the capability to store, record, and/or transmit text, images/video, or audio data. Examples of PED include, but are not limited to pagers, laptops, cellular telephones, radios, compact disc and cassette players/recorders, portable digital assistants, audio devices, watches with input capability, reminder recorders, and mobile devices.

B. PEDs are not allowed inside of NUWC Keyport Buildings. PED use will be clarified and discussed at the site walk and pre-construction meeting

C. The Government PM/ET or Building POC, David Manning, will provide location of phone for emergency use.

D. For work inside the NUWC Keyport Annex, refer to the Keyport Annex Safety and Physical Access Security Brief.

6. Photography A. Photography by the Contractor is prohibited. Construction progress photos, and all other necessary photo documentation, will be provided by authorized Government personnel only.

7. Schedule

A. Before starting any work, the ET is to be provided with the project schedule for review and approval. Government has 5 working days to review and return schedule.

8. Coordination A. The ET shall be contacted to coordinate access to the buildings for job walks, site visits, and scheduling of the work.

9. Lock out Tag Out A. Lock Out/Tag Out: Contractors must notify the (SECURE AREA NAME – POC) five (5) working days before anything can be locked out. The notification should include: what is being locked out, the tag number, the person on the tag and phone number shall also be provided to the (SECURE AREA NAME – POC) within 24 hours of removal.

10. Vehicle Access A. All vehicles will be subject to inspection and search prior to entering and within NBK -

Keyport. Avoid transporting sealed containers into NBK - Keyport. If such containers must be introduced, prior coordination with the ET is required.

11. Parking A. Parking stalls at NUWC Keyport are assigned to NUWC Keyport employees. If the contractor requires a lay down area, a Road Closure/Lane-Closure/Disruption request permit will need to be submitted through the NBK. Refer to Reference F for instructions.

12. Security A. Compliance with the security directions of Security Force Personnel is mandatory.

VIII. Deliverables:

1. The Contractor is responsible for providing a complete and useable system.

2. The Contractor shall prepare and submit two (2) hard copies (in 3-ring binders) and two (2)

CD/DVDs of the Operations and Maintenance (O&M) Manuals to the ET. Each binder shall have the project contract number, Prime Contractor letterhead, project title, and building number on the spine and face of the binder. Each binder shall include Attachment (1) above, all product data, manufacturer’s manuals, warranty, specifications, field test results, wiring diagrams, and as-built prints (red line drawings), as necessary.

3. Before final payment will be approved, the Contractor shall provide all necessary training required on any and all new systems.

4. This project will not be accepted as complete until all project documentation and punch list items have been submitted to, and approved by the ET in their entirety and the Customer provides their concurrence electronically to the ET that the project is complete.

IX. Work Description:

1. Coordinate with ET prior to commencement of work.

2. Carefully investigate the plumbing, fire protection, electrical, structural and finish conditions that would affect the work to be performed and arrange such work accordingly, furnishing required offsets, fittings, and accessories to meet such conditions.

3. Perform work in accordance with the manufacturer's published diagrams, recommendations, and equipment warranty requirements.

4. Provide refrigeration equipment conforming to ASHRAE 15 & 34. Provide necessary supports for all equipment, appurtenances, and pipe as required, including frames or supports for compressors, pumps, cooling towers, condensers, and similar items. Isolate compressors from the building structure.

5. Remove and dispose of existing RTU combination heating/cooling roof top unit, Trane, Model YSC072A, serial number 449100435L, Facilities Maintenance number E074-0-ROF-1580-20-1B.

6. Provide and install new HVAC roof top unit.

Install equipment in accordance with the manufacturer's recommendations.

RTU and components shall be capable of connecting to Base DDC system for future connection if necessary. Connection to the DDC system is not a requirement for this project.

7. Removal and installation of RTU should be scheduled to be completed on a weekend due to assumed crane usage to accomplish task.

8. Removal and replacement of RTU must be completed as quickly and safely as possible while limiting down time to the HVAC system to a short as time frame as possible.

9. Provide and install three Two (32) new air diffusers, ducting, and components in ceiling of room 108 107. See attachment #2 – HVAC Details for general location. Government will provide exact location during site visit.

Install equipment in accordance with the manufacturer's recommendations.

10. Relocate one existing diffusers in room 108 to room 107. Government will provide exact location during site visit.

11. Remove one existing air return vent from room 108.

12. Provide and install new drop ceiling tiles as needed for work in rooms 107 and 108.

13. Balance existing duct system after new AHU is operational and additional air diffusers have been installed or relocated per the above work description statements. System must be balanced for an even distribution of heating and cooling throughout the area served by the new AHU.

Balancing can be done by mechanical installer. Third party testing is not required.

14. Provide and install a new thermostat to control the new AHU. The Thermostat will be installed in room 107. The Government will provide mounting location after award of contract.

15. Provide and install five new ductless split systems. See attachment #2 – Bldg. 1074 HVAC

Locations. The Government will verify mounting location at bid walk.

Room 107 – Server Room

Remove existing 5-ton ductless split unit which includes 2 indoor wall mounted AHUs

Provide and install new 5-ton ductless split unit with 2 indoor wall mounted AHUs in same location.

Condensate will drain by gravity to the exterior of the building.

Room 108 – Control Room

Provide and install a 1-ton ductless split system with 1 indoor wall mounted

AHU.

Room 109 – Conference Room Provide and install a 4-ton ductless split system with 4 indoor ceiling mounted

AHUs.

Room 110 – Office

Provide and install a 1-ton ductless split system with 1 indoor ceiling wall mounted AHU.

Room 131 – Secure Office Space Provide and install a 5-ton ductless split system with 2 indoor ceiling mounted

AHUs.

A hard-wired wall mounted thermostat shall control ductless split unit.

All electrical or control wiring shall be installed in conduit and surfaced mounted.

16. Electrical power for the ductless split unit will be taken from electrical panel CR2, circuits 28 – 42.

17. Electrical conduits must be concealed in walls, ceiling, or above the drop ceiling.

18. The ductless split system outdoor units must be installed on the west side of bldg. 1074. Use of uni-strut racks to stack the outdoor units is recommended. Racks or mounts shall be installed in such a way that maintains use of the parking spaces.

19. Condensation from the air-handling units must drain by gravity to the exterior of the building where possible. If units cannot be drained by gravity due to building obstacles, a concealed condensate pump is acceptable. Inform NUWC ET of obstacles before purchasing or installing a condensate pump.

20. All exposed line sets must be protected with a line set cover. Openings must be sealed to prevent pest and water intrusion.

21. Pipe, fittings, hangars and valves: All piping shall be properly supported, installed straight and uniform. All access panels and service valves shall be non-obstructed and easily accessible for maintenance purposes. Seismic bracing is required to be installed per applicable building codes and manufacture’s recommendations for all ceiling mounted units.

22. All penetrations; and openings that can be susceptible to water intrusion from the exterior elements to the interior facility/equipment, shall be sealed to prevent water intrusion. Insulate and/or seal all penetrations accordingly.

23. Where pipes pass through walls, furnish and install tested and listed fire stopping systems, combination of materials, or devices to form an effective barrier against the spread of flame, smoke and gases, and maintain the integrity of fire resistance rated walls. Through-penetrations include the annular space around pipes. See attachment “Fire and STC Rated Drawings” for location of fire rated walls and STC ratings. STC ratings are also required to be maintained.

24. For temporary penetrations 3” or less in diameter a core can be left in place or other material temporarily inserted and sealed with caulk to visibly show any evidence of tampering. Larger penetrations need to be addressed ahead of time with the ET for method of temporary securing.

25. All surrounding walls or structural surfaces affected by removal or installation of all equipment must be restored to the match the surrounding finish.

26. All equipment, components, and hardware used outside of bldg. 1074 must have a marine coating package and/or approved for use in a marine environment.

27. Installation of new units includes outside mounting brackets, condenser, weatherproof electrical disconnects, insulation, refrigerant, copper tubing, fan coil units mounted in the office spaces and condensate drains. Installation of condenser units and fan coil units should be free of obstacles to ensure access for routine maintenance or repair.

28. Electrical power for the new ductless cooling system will be supplied from panel CR2.

29. Recover all refrigerant in HVAC equipment scheduled to be demolished. Provide the NUWC POC with receipt showing refrigerant captured from devices removed from service.

30. After becoming familiar with all details of the work, perform Verification of Dimensions in the field, and advise the Contracting Officer of any discrepancy before performing any work.

31. Temporarily or permanently, secure all penetrations and openings at the end of each workday.

32. Upon completion of the work, the Contractor shall inform the ET, and demonstrate operational tests.

X. Title to Materials:

1. All excess and/or discarded materials shall become property of the Contractor and shall be removed from government property, unless specifically noted. Title to the materials resulting from demolition is vested in the Contractor upon authorization of the Contracting Officer to begin demolition.

2. Recycling is preferred and recommended. A WIS is required for disposal and recycling is required for metal.

XI. Material/Equipment In-Place List:

1. The Contractor shall provide a list of significant equipment and materials removed, replaced, or installed under this contract with the required information below, including the warranty expiration date.

A. Types of equipment and materials:

I. Materials: Line set covers, conduit, and all material with a manufacturer’s warranty.

II. Equipment: Roof Top Unit, Ductless Split Units, and thermostat with an O&M manual or manufacturer’s warranty.

2. Required format and information: The Contractor shall provide material and equipment data in the attached format (Attachment (1) – Material/Equipment In-Place List). All of the requested data shall be provided prior to final inspection or final acceptance.

XII. Cleanup:

1. Debris and Rubbish: Remove and transport debris and rubbish that will prevent spillage on pavements, streets, or adjacent areas. Clean up spillage from pavements, streets, and adjacent areas on an ongoing basis.

2. Contractor shall not dispose of debris/rubble on NBK property or in NBK dumpsters.

3. Upon completion, the Contractor shall remove all containers, surplus material, equipment, and debris and leave the site in a clean and orderly condition acceptable to the ET. The project will not be received and/or accepted until all project debris is removed from the site.

XIII. Safety and Environmental:

1. Safety is everyone’s responsibility. All contractor personnel on site are responsible for their own actions and any person on the project site has the authority to stop work if an unsafe condition exists.

2. The Contractor shall perform all work according to accepted Industry Standards, Safety and Environmental Procedures, and regulations, including Ref (B) and the latest revision of OSHA regulations.

3. The Contractor is responsible for inspecting their worksite for any hazards at all times, no exceptions. If an unsafe condition exists, work to correct or mitigate the hazard and contact the ET to assist in determining how to proceed, if needed.

4. Ensure all workers are wearing the proper PPE for the assigned task.

5. Environmental – The Contractor shall obtain approval of a site plan detailing methods of handling encountered waste and refuse, including spill response procedures, per Ref (E) prior to the start of any site work.

PPI Questions and Government Responses:

1. Can the government provide the process required for sealing the walls around any new penetrations? Is it just the called out fire stopping? Is there a different process for interior vs. exterior walls?

Government Response:

All penetration will need to be sealed with listed and tested fire and STC ratings for that particular wall.

See attached “Fire and STC Rating and design floor load” attachment and SOW REV#001 dated 9/30/22.

2. Can the government confirm if the air balancing needs to be done by a third party or can it be completed the mechanical installer?

Government Response:

Balancing can be done by mechanical installer. Third party testing is not required. See SOW REV#001 dated 9/30/22.

3. Can the government confirm that outdoor condensing units will need to be mounted on the wall above the ground if located in front of parking spaces in order to maintain the use of the parking space?

Government Response:

Racks or mounts shall be installed in such a way that maintains use of the parking spaces. See SOW REV#001 dated 9/30/22.

4. Section B Ductless Split Unit Control calls out the Split Unit Control shall have a wireless controller to perform input functions necessary to operate system. The scope clarifies that all split units must be capable of being controlled by a hard wired thermostat. Can the government confirm that the scope of work requires only one hard wired thermostat to be provided for the split units in room 131?

Government Response:

Confirmed we only need one hard –wired thermostat in room 131. See SOW REV#001 dated 9/30/22.

5. Can the government confirm if USL&H is required for this project?

The Government assumes that USL&H would not be required for this project but the contractor should confirm with their insurance company.

6. Can the government confirm a Full-time Quality Control Manager and site Superintendent will not be required on-site, however they will be required for critical evolutions, inspections, QC reports, and act as a POC for the Government technical personnel to contact as needed?

Government Response:

A Full-time Quality Control Manager and site Superintendent will not be required on-site, however they will be required for critical evolutions, inspections, QC reports, and act as a POC for the Government technical personnel to contact as needed.

7. Please confirm you can have a working superintendent/safety?

Yes that is acceptable.

8. If a non-working superintendent/safety and Quality Control Manger is needed, can it be one person who meets all of the requirements?

Yes that is acceptable.

9. Can the government clarify if there are limitations or constraints for when government provided escorts will be available?

As stated in section VII. B. Escorts will be available per the contractors approved schedule.

10. Can the government clarify who can issue a hot work permit for work in B1074?

Government ET will issue hot work permits.

11. Can the government confirm that the diffuser removed from room 108 will be installed in room 107 and will be considered one of the 3 new diffusers required by the SOW?

Government Response:

Confirmed, 3 total (2 new and 1 relocated from room 108). See SOW REV #001 and Attachment – Bldg 1074 HVAC Locations REV#001 dated 9/30/22.

12. HVAC product lead time may dictate work execution for change out of the roof AHU and the two room split units. Can the government confirm that the existing AHU is sufficient to cool the space (Room 107) if product availability has the change out of the split units occurring prior to the install of the new AHU?

All new units should be onsite before existing ones are removed to minimize downtime.

13. Can the government confirm the customer will provide enough escorts to work in two distinct areas of the building at the same time?

Confirmed Government can support escorts in two areas of the building at the same time. See SOW REV#001 dated 9/30/22.

14. Can the government clarify what if any seismic bracing is required for the HVAC cassettes/split systems located in the ceiling grid in Room 109 and 131?

Government Response:

Yes seismic bracing is required to be installed per applicable building codes and manufacturer’s recommendations for all ceiling mounted units. See SOW REV#001 dated 9/30/22.

15. The split system cassettes will need to be hung from the existing bracing 19 feet above finished floor in Room 109. A motorized or stationary platform will need to be placed on the existing finished floor. Can the government confirm if there is a raised floor in Room 109? If yes, can they provide the load capacity per sf?

Confirmed there is a raised floor. Only known floor loads are those shown in attachment “Fire and STC rating drawings and design floor loads” from the original building design.

16. The split system cassettes will need to be hung from the existing bracing 19 feet above finished floor in Room 131. A motorized or stationary platform will need to be placed on the existing finished floor. Can the government confirm if there is a raised floor in Room 131? If yes, can they provide the load capacity per sf?

Government Response:

Confirmed there is a raised floor. Only known floor loads are those shown in the attachment Floor Load Design Criteria from the original building design.

17. Can the government confirm what is acceptable for temporarily securing all penetrations and openings at end of each workday?

Government Response:

For temporary penetrations 3” or less in diameter a core can be left in place or other material temporarily inserted and sealed with caulk to visibly show any evidence of tampering. Larger penetrations need to be addressed ahead of time with the ET for method of temporary securing. See SOW REV#001 dated 9/30/22.

18. Is there any hazardous material in the building that will be disturbed during construction? If yes, can the government provide the testing and analysis reports?

Due to the age of the building (constructed in 2004) the Government does not anticipate any hazardous materials to be encountered. If the contractors comes across anything suspicious please notify the Contracting Officer immediately.

19. Can the government confirm all non-attached/permanent furniture/equipment will be removed from the work area by the customer? (Data racks and associated equipment would be considered permanent)

Confirmed the government will remove all non-attached furniture (as needed) from the work area.

20. Is the contractor to install service receptacles within 25’ of the new condensers per NEC 210.63?

Confirmed all work shall comply with NEC and other codes required by section V. Quality Control.

21. On the site visit, we were unable to identify the electrical circuit size and source panel for the 6-ton rooftop unit. Can the government provide the electrical as-built drawings/building plans?

Rooftop unit is fed from a 20 amp circuit in Panel M on the mezzanine in room M101B.

The following have been deleted:

SCOPE OF WORK

SECTION 01 00 00 - GENERAL REQUIREMENTS

The following have been modified:

ATTACHMENTS

1- Material Equipment In Place List 2- Bldg 1074 Duct Work 3- Bldg 1074 Exterior Wall Detail 4- Bldg. 1074 HVAC Location Rev 001 – 9/30/2022 5- Bldg. 1074 Photos 6- PPI Form 7- Bid Form 8- Past Performance References Form 9- Safety Data Sheet 10- OSHA – Calculating Injury and Illness Incident Rate 11-OPSEC Guide for Defense Contractors (2016) 12-NAVSEA Guide to Environmental Compliance Requirements 13-Safety Requirements for Contractors and Subcontractors (2021) 14-Wage Determination 15- Bldg. 1074 Fire and STC Rating Drawings and Design Floor Loads

(End of Summary of Changes)