Amendment 016.pdf

Amendment 016 Department of the Treasury, Bureau of the Fiscal Service

Division of Procurement

DATE: August 04, 2025

FROM: Kaitlyn Eaton, Contract Specialist

SUBJECT: RFQ: 20342325Q00014 – AFRH-Gulfport Generator Replacement

Amendment 016

The purposes of this amendment are:

1. To answer vendor questions.

2. To provide a site visit opportunity on August 7th at 9:00am, CST. (Details below)

3. To provide additional attachments in response to vendor questions.

4. To extend the solicitation period to August 14th at 10:00am, ET.

Attachments Added to Solicitation:

• Addendum Cover Sheet

• Additional Specification Documents

• Updated Construction Bid Documents

Please find vendor submitted questions below with the Government’s response to the questions.

1. Please provide shop drawings and submittal data for the existing paralleling switchgear and control systems for our evaluation and determination on what generator manufacturers are equipped to integrate into the existing switchgear.

The Government Response:

AFRH has now provided all available existing documentation.

JMS

2. Fuel Oil piping specification is missing from construction documents. Existing fuel oil piping is double wall piping. Please confirm double wall piping requirement for new fuel oil piping and provide specifications for pipe, fittings, and valves.

The Government Response:

Yes, double-wall fuel oil shall be provided for new diesel fuel pipe to match existing.

Specifications will be provided for fuel oil piping for further clarification regarding pipe material schedules.

08/04/2025 Update – Additional specifications and drawings have now been provided.

3. Drawing E001, Electrical General Notes do not include any information regarding the sequence of operation for the new generators. Electrical Specifications do not include any information regarding modifications to the existing paralleling switchgear, AC breakers, or protective relays. Please provide a scope of work and sequence of operation, along with any required modifications to the switchgear and control systems.

The Government Response:

Drawings and specifications to be updated to include modification work on the existing paralleling switchgear and sequence of operations.

4. Drawing E101 shows installation of new load bank under existing platform. Please provide basis of design for this unit. Our measurements from the site visit indicates that the unit may physically fit, but will not have the air discharge clearances as required by the manufacturer for proper operation and dissipation of heat.

The Government Response:

E101 to be updated to include the basis of design of the new load bank.

5. Drawing E102 shows the installation of a new diesel generator EG1 (2.25MW) and new natural gas generator EG2 (2.005MW). The footprints shown for each are very similar.

Please provide basis of design for the proposed new generators. We are concerned that the new natural gas generator will not fit within the space available on the existing elevated platform, and are currently awaiting size and weights from manufacturers.

The Government Response:

Drawings to be updated to include generator basis of design information.

6. There are no specifications for the new propane-fueled generator. Please provide further details on requirements for the generator, including concrete pad, propane fuel storage/piping, enclosure, etc.

The Government Response:

Specification for new propane-fueled generator will be provided. Drawings to be updated to include generator requirements and details.

7. Drawing E103: The new manual transfer switch is shown mounted on the wall. At the site visit we noted that there is a wall-mounted fan coil unit in the same location, below where the transfer switch is to be installed. Do we have the discretion to relocate the transfer switch so that its performance is not compromised by the fan coil unit when operating in the heat mode?

The Government Response:

AFRH to determine whether it is acceptable to relocate the wall-mounted fan coil unit. Is there another available space for the new manual transfer switch?

08/04/2025 Update – Yes, a new location can be recommended. In addition, if there are no code issues, it may be located on the north wall.

8. Drawing E202: Keynote #2 calls for a new medium-voltage cable plus a 600V ground wire to be installed between new generator and existing NGR. The existing NGR is currently connected to the existing generator using a 600V cable in maximum 2-inch conduit routed below the platform. Please verify that the new medium-voltage cable connection is required, since it is undetermined if there is space within the existing NGR for a medium-voltage termination. Furthermore, since there is only one connection point at each end, the 2 cables called for in keynote 2 will operate in parallel, and is a possible violation of the National Electrical Code due to different sizes and insulation types.

The Government Response:

Drawing note 2 will be updated to show two new separate conductors and conduits for neutral and ground.

9. Drawings S001, S101, and S201: Drawings are stamped Not for Construction, preliminary pricing only. Please provide drawings which shall be used for final pricing.

The Government Response:

Bid documents should be dated 8/30/24 and stamped on 9/24/24. Contractors should confirm they have correct drawings from AFRH.

08/04/2025 Update – “Not for construction” is not found on Construction Bid Documents dated 08/30/2024 and stamped on 09/24/2024. Please review the correct documents.

10. Spec Section 26 05 73.13, 3.1, A: One-line diagrams provided on drawings E201 and

E202 do not contain sufficient data to perform the study. Please provide information on unit substation #2 and plans showing the location of the substation and routing of the medium voltage supply feeder. Or clarify that the contractor will be required to field investigate to obtain the necessary information to complete the study.

The Government Response:

Contractor to field investigate to obtain the necessary information to complete the study.

08/04/2025 Update – A site visit opportunity is being provided on Thursday, August 7th at 9:00am, CST at 1800 Beach Drive Gulfport, MS 39507.

Please send the name and number of attendees to purchasing@fiscal.treasury.gov and kaity.eaton@fiscal.treasury.gov by 10:00am on Wednesday, August 6th.

mailto:purchasing@fiscal.treasury.gov mailto:kaity.eaton@fiscal.treasury.gov

11. Spec Section 26 05 73.13, 3.1, E and H: These paragraphs are contradictory. To perform the calculations at each equipment shown on the one-line diagrams as described in paragraph H, the short circuit analysis study must be extended to all equipment shown on the one-line and cannot be limited to the 480/277-volt side of the unit substations US1 and US2. Please clarify which paragraph is correct, and whether field investigation will be required to obtain the necessary data, or will the data be provided by owner.

The Government Response:

Contractor to field investigate to obtain the necessary information to complete the study.

08/04/2025 Update – A site visit opportunity is being provided on August 7th. Details in Answer # 10.

12. Spec Section 26 05 73.16, 3.3, E: This paragraph limits the extent of the protective device study to the 480/277-volt side of the unit substations US1 and US2. Numerous other paragraphs within this specification section require analysis beyond the limit defined in this paragraph and will require extensive field investigation. Please clarify that the requirements stated in all other paragraphs within this specification section will only apply to equipment and devices within the limits defined in paragraph 3.3, E.

The Government Response:

Contractor to field investigate to obtain the necessary information to complete the study.

13. Spec Section 26 05 73.19: The Arc-Flash Hazard Analysis contains no language limiting the extent of the analysis to the 480/277-volt side of the unit substations US1 and US2. To perform the analysis required as currently stated in this section (and only limited by paragraph 3.2, E) will require performing complete short circuit and coordination studies, as correctly stated in paragraph 3.2, B. Given the size of this facility, this is a very large scope of work, and is at variance with the limits identified in sections 26 05 73.13 and 26 05 73.16. Please review and provide a scope of work for the Arc-Flash Hazard Analysis that correlates properly with limits associated with the short circuit and coordination studies described and clarified in sections 26 05 73.13 and 26 05 73.16.

The Government Response:

Since there is no existing Arc-Flash Hazard Analysis available for this location, contractor to perform complete short circuit and coordination studies for AFHA.

14. Spec Section 26 08 00, 1.2, B: Specification Section 01 91 13 “General Commissioning

Requirements”, as referenced, is not included in the solicitation documents. Please provide the section listed above.

The Government Response:

Spec 01 91 13 - General Commissioning Requirements will be provided.

15. Spec Section 26 32 13.13, 2.5, B: Specification 23 11 13 “Facility Fuel-Oil Piping”, as referenced, is not included in the solicitation documents. Please provide this section, and any detailed drawings showing fuel pipe connections, and any additional specifications for the fuel polishing system,new double wall fuel tanks, automatic tank gauging, pumps, leak detection system, and any appurtenances as applicable.

The Government Response:

Reference drawings and specifications will be included in the next submission.

16. Spec Section 26 32 13.13, 2.6, I: This paragraph calls for a new remote annunciator.

No information is provided on the drawings. Please provide information on where to install new remote annunciator, and any conduit routing requirements back to the generators. Can any existing conduit be re-used? Same question applies to Spec Section 26 32 13.16, 2.6, I.

The Government Response:

Update drawings to show info. Does the existing generator have remote annunciator? If yes, install the new annunciator at the nearby location.

17. Spec Section 26 32 13.13, 3.1, E: Specification Sections 23 21 13 “Hydronic Piping”, 23

21 16 “Hydronic Piping Specialties”, and 23 07 19 “HVAC Piping Insulation”, as referenced, are not included in the solicitation documents. Please provide the sections listed above.

The Government Response:

Reference specifications will be included in the next submission.

08/04/2025 Update – Referenced sections are not applied to this project. Spec references have been removed.

18. Spec Section 26 32 13.13, 3.4, A thru D: Paragraphs A through D represent 4 options for the personnel or agency required to perform tests and inspections of the generator. Please clarify whether an independent testing agency will be required to perform the tests and inspections of the generator, and who will engage this agency (Paragraph A or B). Please clarify if in lieu of an independent testing agency, should the contractor engage a factory authorized service representative to perform the tests and inspections, or perform the tests and inspections with the assistance of a factory authorized service representative (Paragraph C or D). Same questions applies to Spec Section 26 32 13.16, 3.4, A thru D.

The Government Response:

It shall be contractor's responsibility to engage the testing agency and the manufacture field service to perform startup & assist Cx.

08/04/2025 Update – Spec session 3.4 are updated to clarify the tests and inspections scope.

19. Specification 22 11 23 Facility Natural Gas Piping makes reference to following specifications which are missing from the construction documents:

a. 22 05 48 "Vibration and Seismic Controls for Plumbing Piping and Equipment."

b. 23 05 53 "Identification for HVAC Piping and Equipment"

c. 31 20 20 "Earth Moving" for excavating, trenching, and backfilling”

The Government Response:

a. 22 05 48 will be provided in bid addendum.

b. 23 05 53 will be provided in bid addendum.

c. 31 20 20 is not required and reference will be removed from section.