Amendment 0001 -Page 2-8 Block 14.pdf

N40080-22-D-2222 X020

Section SF 30 – BLOCK 14 CONTINUATION PAGE

The following have been added by full text:

The purpose of this Amendment #0001 is to provide:

1) RFI responses below Page 2-8

2) The attached Site Visit Documents include the Pre-Proposal Site Visit Sign in Sheet. Page 9

3) Pre-Proposal Site Visit Agenda. Page 10

4) Revised SOW 11- 267 pages

5) Airflow Test Report Page 268

6) Wage Determination MD20240055 05/17/2024 Page 269

The Proposal due date changed: Thursday, 6 June 2024 no later than 2:00 pm (EST).

RFI LOG

B2624 Replace Exhaust

NAS PATUXENT RIVER, MD

1. Please confirm that the controls for the new units will be stand alone and not tied into the building BAS

System?

Response: The new units will be tied to the building new BAS.

2. Does the existing ductwork need to be replaced or just replace the ductwork that is required to install the new equipment?

Response: Replace just the ductwork required to install the new equipment.

3. The Statement of Work in Part 3 paragraph 1.0 states the unit shall have electric heating. It was stated at the

Pre-Proposal Meeting and the site visit that the provided unit shall utilize gas heat.

Please confirm the bid shall be based on a supply air unit with gas heat.

Response: An updated SOW will be provided. The new make-up air unit will use gas for heating.

4. The Statement of Work in Part 3 paragraph 2.1 1, states that an airflow of 75 FPM shall be maintained at the firing line. Please confirm that the existing duct work and diffusers are intended to be re-used.

Response: The existing duct will remain. Replace diffusers.

5. If the duct and diffusers are to be re-used by the provided systems, please confirm that the existing system meets the required velocity at the firing line.

Response: The existing ductwork will remain. Replace diffusers. Existing system meets the required velocity. Test report will be provided.

6. Per the Pre-Proposal Meeting, we understood there are no as-built, design documents, or sequence of operations for the existing range systems. Please confirm.

Response: There are no as-built, design documents, or sequence of operations for the existing range systems. Contractor will develop and provide drawings and sequence of operation of new installed equipment and controls conforming with UFC code.

7. Per the Pre-Proposal Meeting, we understood that the controls system will be standalone for the equipment provided by this project and will not be connected to the existing equipment serving B2624 to remain.

Response: The new BAS controls will not be connected to the base wide system. The new controls will regulate and operate the firing range ventilation system.

8. Please confirm the controls provided by this project are only for the systems provided.

Response: The new BAS controls will operate the firing range ventilation systems and associated components and accessories.

9. Please confirm that the provided controls system is standalone and will not connect to a base wide system.

Response: The new BAS controls will not be connected to the base wide system

10. Per the Pre-Proposal Meeting, we understood that due to the facility being a firing range that there is not a requirement for lead testing. Please Confirm.

Response: The building will contain lead debris. Contractor may test for lead at their expense.

11. Please confirm that asbestos testing is not required.

Response: At this time, there is no record of asbestos found in the building.

12. Per the Pre-Proposal Meeting, the firing range will not be operational during construction. Please confirm.

Response: The firing range will not be operational during construction.

13. The Statement of Work in Part 3 paragraph 2.4 invokes UFC 4-179-02. Please confirm the following guidance from UFC 4-179-02.

Response: The UFC 4-179-02 is the guidance for firing range requirements. The current controls system and equipment are not within UFC code requirement.

14. UFC 4-179-02 invokes UFC 1-200-02 per paragraph 1-3.3. Please confirm that this criteria only applies to the commissioning and recycled content requirements due to the nature of the project.

Response: The current controls and systems are not within the UFC code requirement. The controls and systems need to meet UFC code.

15. Per UFC 4-179-02 paragraph 4-21.1, the preferred location for range exhaust AHU’s in on the ground to simplify filter changes. Please confirm the unit is intended to be re-installed on the roof.

Response: The make-up air unit and exhaust unit will be installed on the roof.

16. Per UFC 4-179-02 paragraph 4-21.1, the ductwork is required to have a spray-on weather and corrosion resistant coating.

a. Please confirm the coating is only required for provided ductwork.

Response: The new units will have weather and corrosion resistant coating.

17. Per UFC 4-179-02 paragraph 4-22.2, cooling shall be provided for locations with sustained temperatures greater than 100 degrees F and sustained humidity over 70 percent. Please confirm cooling is not required.

Response: The new make-up air unit will not require cooling.

18. Per UFC 4-179-02 paragraph 4-21.3, a high debris area requires the supply system to be provided with

MERV 13 filters in addition to the MERV 8 filters. Please confirm that the building is not in a high debris area.

Response: The building is not in a high debris area.

19. Per UFC 4-179-02 paragraph 4-21.5, the system shall have the ability to connect to the internet through a government provided internet connection.

a. Please confirm the units are intended to be standalone controls and will not connected to the internet or other communication system that extends beyond the building.

Response: The new BAS controls will not extend beyond the building.

20. Please confirm that this project is limited to the supply equipment, exhaust equipment, and related controls and does not include the modification of the building or other building systems.

Response: The project is limited to make-up air unit, exhaust unit, and related controls, and associated components and accessories.

21. Confirm that the new BAS is only intended to operate the exhaust and makeup air systems and are not required to monitor or control the operator room air conditioning system.

Response: The new BAS will control the exhaust and makeup air systems and associated components and accessories.

22. The current termination of the two toilet exhaust fans is unknown. There is no connection to the main exhaust system and no wall or roof termination. A probable assumption is that they exhaust into the building plenum space. Is it acceptable to discharge thru the side wall via a brick vent or louver?

Response The toilet exhaust is not in RFP requirement. Disregard the CATEX pertaining to toilet exhaust.

23. Is the roof under any warranty?

Response: The roof is not under warranty.

24. Solicitation says “Building will remain occupied during construction.” Does that mean the firing range

(and associated ventilation system) has to remain operational during construction?

Response: The firing range will not be operational during the construction.

25. Attachment A.2-Catex includes replacement of two bathroom exhaust units, while the Solicitation does not.

Please confirm if scope includes.

Response: The toilet exhaust is not in RFP requirement. Disregard the CATEX pertaining to toilet

26. Considering the scale of the project, can an independent team (not the DOR) from the same organization perform the Cx operations as per UFGS section 01 91 00.15?

Response: Third party independent team can perform the Cx operation.

27. Will government provide CAD background for the existing building envelope and systems to the design team?

Response: CAD background of the existing building envelope and systems are not available.

28. Does the superintendent, SSHO, and QC manager need to be 3 separate individuals? Or can one individual perform all 3 roles?

Response: Superintendent cannot be a QC or SSHO. QC can be dual hatted as SSHO.

29. Can the period of performance be extended after award once the material/equipment lead times are confirmed due to current market conditions for this project?

Response: Yes, the period of performance can be extended.

30. The current controls system in the building is JCI. The solicitation states that BAS controls for the building are inoperable. Does NAVFAC have a preference for the replacement controls that will be installed in this building?

Response: Install same product as the existing, JCI.

31. It was noted during the site walk that there are not any existing drawings or documents for the building and its associated equipment. Please confirm there are no existing documents associated with B2624.

Response: There is no existing drawing available.

32. Will the design be in AutoCAD or Revit? If Revit, will there be a requirement for BIM Level coordination within the design phase?

Response: The design will be AutoCAD.

33. Will mechanical, electrical, architectural, and/or structural drawings be made available in AutoCAD and/or

Revit format? If not, is it expected for the design team to provide fully developed AutoCAD and/or Revit files?

Response: There is no existing drawing available. It is the intent for contractor to provide drawings in fully developed autocad.

34. If there are no existing structural drawings and/or documents, please confirm that a structural engineer will be required to verify the existing structure and provide analysis/design for the new equipment installation.

If so, is there a personnel lift available on site to assist with the structural engineer's access for existing conditions verification?

Response: There is no requirement for structural engineer.

35. Is there a preferred basis of design manufacturer for the new equipment?

Response: Contractor will determine the size and capacity to meet the firing range requirements conforming with UFC codes.

36. The solicitation documents state that the building will remain occupied during construction. Will temporary means of heating, ventilation, and exhaust be required to maintain full operation of the firing range throughout the construction period?

Response: The building will not be operational during construction. Temporary units will not be required.

37. The description of work described within the solicitation document states the “New work includes installation of make-up air unit with electric heating…". It was stated during the site walk that electric heating was a typo and that the new make-up air unit shall be provided with gas heating to match the existing unit configuration. Please confirm the new make-up unit shall be provided with gas heating in lieu of the electric heating noted in the solicitation documents.

Response: An updated SOW will be provided. The new make-up air unit will use gas for heating.

38. Design deliverables do not appear to be provided within the solicitation documents. Please confirm the expected design deliverables and quantities of submissions associated with this project.

Response: Four design submission; 50%, 95%, pre-final, and final.

39. What is the duration of owner review following each design deliverable submission?

Response: The owner will have 21 days review of each design deliverables.

40. Does the owner have recent airflow testing results that can be provided to the bidders? If not, should existing airflow testing be performed during the design phase of the project?

Response: Airflow Test report will be provided. Contractor shall meet the UFC code requirement 50

FPM minimum and 75 FPM maximum.

41. Will the new BAS system require communication with a base-wide central system? If so, please provide information for the central system that would require connection.

Response: The new BAS is standalone to the building.

42. The existing exhaust ductwork located at the end of the firing range appears to have bullet holes throughout the ductwork. Does the owner desire to replace the existing exhaust ductwork? Does the owner desire to replace the existing supply ductwork?

Response: The existing ductwork both exhaust and supply will remain the same.

43. Please confirm the only VFD which is located in the firing range control booth serves the existing exhaust fan as noted Attachment A.1, Part 3, Chapter 2, Page 5, and Section 3.1.

Response: Current ventilation system only the exhaust unit with VFD. This project require both exhaust and make-up motors to have VFD's to meet UFC code.

44. Please confirm the exhaust filtration system shall be replaced with the exhaust fan. If so, does the owner have specific requirements beyond the requirements listed in Attachment A.1, Part 3, Chapter 2, Page 2, and Section 2.1.1?

Response: The requirement is to replace rooftop exhaust unit.

45. Will this project require specifications to be provided via SpecsIntact?

Response: Contractor will provide specification in specsIntact.

46. Please confirm that the existing packaged rooftop unit and associated appurtenances serving the control booth is not within the scope of this project.

Response: There is no requirement for the existing rooftop package unit and associated appurtenances serving the control booth.

47. Please confirm that the work associated with the existing restrooms is limited to the replacement of the existing exhaust fans.

48. Is there an existing roof warranty? If so, can the owner provide the roof warranty information and contacts to the bidders?

Response: The existing roof is not under warranty

49. Will an architect be required?

Response: No. There is no requirement for architect for this project.

50. Can mechanical drawing suffice for DoR on this project?

Response: A mechanical drawing will be required in AUTOCAD

51. Please confirm number of submissions for this project.

Response: Four design submission; 50%, 95%, pre-final, and final

52. Will the government provide a laydown and staging area or storage for construction materials?

Response: Laydown and staging area can be arranged and coordinated.

53. Will the General Contractor be required to have Field Office for meetings? Please advise.

Response: Field office is not required for this project. Meeting can be held in the building or

NAVFAC building.

54. Will the Government provide a storage area for items to be removed and reinstalled?

Response: Laydown and staging area can be arranged and coordinated.

55. Will the workers/personnel be allowed to use the public toilet?

Response: The workers/personnel may use the building toilets. General Contractor is responsible for maintaining and cleanliness of the toilets.

56. Please confirm that the Contractor can connect and use the existing utilities free of charge?

Response: Contractor may connect and use existing utilities for free.

57. Please advise if this Solicitation is U.S. Citizen only or if Green Card/Right to Work permits are allowed for Sub trade workers.

Response: Green card holders may permit to work in the building.

58. Can one person work as superintendent, QCM, and SSHO? (Triple Hat)

Response: Superintendent cannot be a QC or SSHO. QC can be dual hatted as SSHO.

59. Is the commissioning scope to be performed by a 3rd party company (including specifications and CxA plan preparation) or can it be performed by the DoR?

Response: The contractor will hire a third party to perform commissioning to include specification and CxA plan.

60. Please provide the existing drawings and the inside dimension of the building.

Response: There is no existing drawing. The shooting range area is 9,032 sf, the total area of the building 10168.0 sf. 74.25 ft. by 137.56 ft.

61. Will this building have stand-alone controls, or will they be interfaced with a central control server?

Response: The BAS controls will be standalone only to the building.

62. Which firm is providing the BAS controls at the Base?

Response: There is no standard firm for BAS on Base.

63. Will existing ductwork and air devices remain inside the building? Is pressure testing and sealing of the ductwork required?

Response: The existing ductwork will remain the same. Replace diffusers or air devices.

64. Are new roof curbs required?

Response: There is no requirement for new roof curbs. Contractor will determine if new curb is necessary for proper installation of new equipment.

65. Are services of a structural engineer required?

Response: There is no requirement for structural engineer. Contractor will provide clarification requiring structural engineer.

66. Is roof under a warrantee?

Response: The roof is not under warranty.

67. Is a new gas piping required?

Response: There is no requirement for new gas piping. Contractor will determine the condition if replacement of existing gas piping is necessary.

68. Please confirm that all ceiling tiles are existing to remain.

Response: All existing ceiling tiles will remain the same.

69. Please confirm that all wall and floor finishes are existing to remain.

Response: All walls and floor finishes will remain the same.

70. Are there CADD or PDFs of MEP as-built drawings of the existing building available?

Response: There is no CAD or PDF's of MEPS as built drawings available.

71. How many design packages (35, 65…IFC) is expected to be submitted?

72. How much SF of acoustical ceiling tile is to be replaced?

Response: There is no requirement for acoustical ceiling tiles replacement.

73. Please provide specification, Basis of Design for acoustical ceiling tile.

Response: There is no requirement for acoustical ceiling tiles replacement.

74. As the mechanical equipment is being replaced in-kind, we assume the existing power will be reused and that the electrical system is adequate for the new equipment. Major modifications/upgrades will not be required. Please confirm this is how the scope should be bid.

Response: The existing electrical system will be reused. Contractor will ensure new equipment meet existing electrical source for a complete, safe, and usable system.

75. Please confirm the design submittals will be 50% DD, 100% and Final.

76. Per discussion during the site visit, there is no electric heating for the new make-up air unit. It will be gas as identified on the roof. Please confirm.

Response: The new make-up air unit will remain as gas source. No electric heating.

77. The exhaust outlet for the bathrooms on the exterior wall could not be identified during the site visit.

Design team will plan to match the existing setup. Or, do we need to make it code compliant and provide new exterior penetration as required? Please provide some feedback.

78. We assume that the equipment is being replaced in-kind for sizing, and no HVAC calcs are required.

Please confirm.

Response: Contractor will ensure new equipment will have same capacity as the existing equipment.

79. All downstream ductwork, dampers, air devices and other accessories are existing to remain. Please confirm.

Response: All downstream ductwork will remain the same. Replace air devices/diffusers. Contractor will determine dampers condition if replacement is necessary.