S06_Amendment 0001_36C24926R0077 FMS Boiler Replacement.docx

5. PROJECT NUMBER (if applicable)

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2. AMENDMENT/MODIFICATION NUMBER

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6. ISSUED BY

8. NAME AND ADDRESS OF CONTRACTOR

4. REQUISITION/PURCHASE REQ. NUMBER

3. EFFECTIVE DATE

9A. AMENDMENT OF SOLICITATION NUMBER

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10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED

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1. CONTRACT ID CODE

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Offers 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:

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

E. IMPORTANT:

is extended,

(a) By completing Items 8 and 15, and returning __________ copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or (c) By separate letter or electronic communication 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 is not extended.

12. ACCOUNTING AND APPROPRIATION DATA

(REV. 11/2016)

is required to sign this document and return ___________ copies to the issuing office.

is not, 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.

15C. DATE SIGNED

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

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 letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER

Contractor

16C. DATE SIGNED

14. DESCRIPTION OF AMENDMENT/MODIFICATION

16B. UNITED STATES OF AMERICA

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

16A. NAME AND TITLE OF CONTRACTING OFFICER

15B. CONTRACTOR/OFFEROR

STANDARD FORM 30

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Prescribed by GSA - FAR (48 CFR) 53.243 (Type or print) (Type or print) (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

(Number, street, county, State and ZIP Code) (If other than Item 6) (Specify type of modification and authority) (such as changes in paying office, appropriation date, etc.)

(If required)

(SEE ITEM 11)

(SEE ITEM 13)

(X)

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ONE

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

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

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

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

09-14-2026

596-26-4-5079-0034

596-26-4

Department of Veterans Affairs Network Contracting Office 9 (90C)

NCO 9

1639 Medical Center Parkway, Suite 204 Murfreesboro TN 37129

90C Network Contracting Office 9 Department of Veterans Affairs Network Contracting Office (90C) 1639 Medical Center Parkway Suite 204 Murfreesboro TN 37129 To all Offerors/Bidders

36C24926R0077

X

596-3660162-5079-855100-2670 0100555X9

The purpose of this amendment is to post the RFI responses for project 596-26-4 FMS Boiler Replacement Commissioning.

Matthew Whisman Contracting Officer

Project 596-26-4, FMS Boiler Replacement RFIs :

1. Factor 3 Standard of Proof (sheet 30 of solicitation) requires PPQ’s to be submitted for 2 similar projects. It is becoming increasingly difficult to obtain Past Performance Questionnaires from Federal Contracting Officers on a project-by-project basis when they have already completed a CPARS evaluation for us. Considering this, will Government consider allowing us to submit completed CPARS evaluation forms with our proposals in lieu of having our references send the provided PPQ? Several Contracting Officers declining to fill these out have cited From FAR 42.1501 General: (b) Agencies shall monitor their compliance with the past performance evaluation requirements (see 42.1502) and use the Contractor Performance Assessment Reporting System (CPARS) metric tools to measure the quality and timely reporting of past performance information. CPARS is the official source for past performance information on federal projects.

2. If CPARS are acceptable, may they be emailed directly to the Contracting Officer by the due date of the proposal or to be included as an addendum that does not count against the page requirement in the final proposal.

CPARS are acceptable and can be included as addendum that does not count against the page requirements.

3. Page 9 of the solicitation lists testing procedures. One items states the following “Occupancy Adjustments: When requested within 12 months of date of Substantial Completion, provide on-site assistance in adjusting system to suit actual occupied conditions. Provide up to two visits to Project during other than normal occupancy hours for this purpose”. This line says to account for two after hours site visits within the 12 month period after substantial completion but does not provide ethe number of regular hour visits. Please provide the total number of visits to include for regular hour onsite assistance with adjustments during the 12 month period after substantial completion. This statement is if we have issues onsite with adjustments and need to be able to reach out to a point of contact for assistance majority will not need onsite assistance but having that POC for information is needed.

4. Is any asbestos containing materials on any pipe or components associated with this project? Emailed safety

5. If there is asbestos abatement, please identify the rooms in which it is present and the qty of abatement. Emailed safety

6. Please confirm the total quantity of boilers in each building. 2 per building

7. It was observed at the site visits that each mechanical room included in the sow has two boilers. It is our understanding that only 1 boiler is active at any given time. Given this, is it acceptable to perform work any time during the year if we only replace one boiler at a time and do not take the second offline until the first is fully operational? Yes if N+1 back-up boiler is supplied by the contractor between September 1 and May 1

8. The new boilers are expected to be smaller than the existing. Is it acceptable to extend the existing concrete pads to fit the new boiler layout/placement rather than demoing and replacing the entire pad? Existing pad can be extended or reused

9. Requirement 2 of the Technical Proposal, as stated on Sheet 29 of 77 of the solicitation, requires offerors to demonstrate successful completion of at least one project involving dual fuel condensing boilers using natural gas with propane backup, including design coordination, fuel train integration, controls, and commissioning.

However, based on the site visit, only four relatively small boilers, two in Building 201 and two in Building 202, are dual fuel. Furthermore, neither mechanical room currently has natural gas service, and the four replacement boilers will not be connected to natural gas as part of this project. Therefore, the dual fuel portion represents a very small part of the overall scope, and it does not appear the boilers will actually operate as dual fuel systems under this contract. All buildings have natural gas supplying the boilers, the cottages don’t have propane backup currently. Would still need the new boilers to be dual fuel capable.

Requiring this specific past experience may unnecessarily limit competition for a qualification that is not representative of the project as a whole. We respectfully request that Requirement 2 be removed or revised to make dual fuel boiler experience optional. At a minimum, offerors should be permitted to demonstrate similar experience with condensing boiler replacement, fuel system coordination, controls, and commissioning.

10. The solicitation does not list the quantity of boilers, basis of design, design heating load, required system redundancy, operating temperatures, system flow rates, required boiler turndown for each building, or other design/performance criteria. During the site visit it was said that an “asset list” or list of equipment required for this project would be provided. Please provide this asset list. Provided

11. There do not appear to be electrical requirements written into the sow for this project. Please confirm that all boiler locations only require power to be disconnected and reconnected. Boilers should match existing facility electrical, be disconnected and reconnected by the contractor. It is the responsibility of the contractor if necessary to adjust the length of electrical whip to terminate at boilers.

12. If any of the new boilers require different electrical requirements from the existing boilers, please clearly identify the boilers in question and the existing and new electrical requirements. New boilers should be matched to existing electrical requirements OR replace existing electrical to meet requirements of new boilers.

13. Please confirm the new dual-fuel boilers in B201 and B202 will be installed with natural gas only since propane service is not available. Yes, only natural gas connections need to be made.

14. Since the boilers are getting replaced in kind, will the BAS controllers wiring simply be disconnected from old and reconnect for new boilers or will additional programming, cabling, etc be required? All controls work needed to maintain existing functionality must be completed by the contractor.

15. Page 10 of the solicitation states “Install CO and combustible gas detectors with audible alarm and BAS reporting on emergency power circuit.”. Please identify the quantity of CO and combustible gas detectors needed in each building. 1 detector per mechanical room.

16. Are the CO and combustible gas detectors with audible alarm and BAS reporting on emergency power circuits existing to be replaced or new at all locations? New equipment must be installed in all locations to include necessary controls and electrical work.

17. The existing boiler system appears to be redundant with only 1 of the 2 boilers in each building active at any given time. Is there a limitation on the total number of buildings that can be worked on at one time? No limitations on number of buildings worked on at one time.

18. Please clarify the requirements for draining, flushing, cleaning, chemical treatment, glycol, water quality testing, and system refilling in each building. Please provide the required water treatment standards and confirm whether the existing hydronic systems contain glycol or chemical inhibitors? Existing boilers are chemically treated with corrosion inhibitor 13110 by Momar to a conductivity target of 1000 µS

1. Pre-Cleaning Inspection Visually inspect piping and equipment for debris, construction materials (such as welding slag or pipe dope), and other contaminants.

2. Initial Flush Perform a high-velocity water flush of the entire system.

Typical velocity: Minimum of 3 feet per second (fps) is recommended to mobilize debris, according to ASHRAE and ASME.

3. Cleaning Solution Circulation circulate an appropriate cleaning chemical Examples: Detergents, degreasers, or scale removers.

4.Secondary Flush After chemical cleaning, thoroughly flush the system with clean water until water is free of chemical.

5. Water Quality Testing Collect samples to test for turbidity, pH (typically 7.5–9.0), TDS (Total Dissolved Solids), and absence of visible contaminants.

6. Passivation Circulate a passivating solution— corrosion inhibitor Momar 13110 currently being used in all buildings—to protect pipework targeting 1000 µS

7. Documentation Record flow rates, velocities achieved, cleaning agents used, and water test results.

19. The scope requires the manufacturer’s standard boiler warranty but does not identify a minimum duration or coverage. Please confirm the required warranty period for the boilers, heat exchangers, burners, controls, BAS work. 1 year from project completion

20. Please identify whether the warranty begins at individual boiler startup, substantial completion. Contractor responsible for maintaining new boiler operation through completion of project, warranty period begins at project completion.

21. The Bid Schedule on page 5 of the solicitation states that POP begins 9/25/26 and POP ends 10/05/27 for a total of 375 calendar days. However, the period of performance is stated as 365 days on Block 11 of page 1 of the solicitation. Please confirm which is correct. 365 was discussed with CO but 375 is acceptable

22. Is the GC or the Government responsible for hiring a third-party commissioning agent? GC has commissioning completed and provides a completion report

23. If the boilers have recirculating pumps, do these get replaced? If so, does the VA want a status added to the BAS? New circulating pumps will need to be installed to include electrical and controls, circulators will need status with BAS alarm added and graphics updated.

24. Please define what separators get replaced on this project as well as sizes and capacities. New separators must be installed in all buildings excluding 201 and 202. Contractor to determine appropriate size and capacity based on the maximum flow rate (GPM) of either the primary (source) loop or the secondary (load) loop—whichever flow rate is higher. On a building-by-building basis.

25. If work is performed after May, how long can the boilers be down for? Until September 1 unless an emergency backup boiler is supplied

26. Will a laydown area be provided in the back contractor lot? Yes

27. Does the VA want new graphics to be provided by the DDC controls contractor Johnson Controls? Existing graphics may be used as long as no functionality is lost, new graphics must be added for circulating pumps to include status and alarm.

28. If the new equipment fits the dimensions of the existing concrete pad, can it be re-used? Yes

29. Please provide the model numbers of the current boilers. Provided

30. Will the VA accept the use of Procore software as the primary submittal platform? Yes

31. Please clarify whether the same projects may be used to satisfy multiple Requirements 1–5 under Factor 1. As currently written, the requirements appear to require prior completion of projects containing nearly the exact combination of systems included in this solicitation. Please confirm whether the Government will instead accept three (3) projects of similar size, scope, and complexity that collectively demonstrate the experience required under Factor 1. COR will find that acceptable

32. Please provide the existing boiler capacities and required replacement boiler capacities/MBH for each building. Provided

33. Provide the design flows, entering water temperature, and leaving water temperature for the new boilers so they can be priced. Should be based off existing boilers, reference boiler summary provided

34. What is the efficacy required for the new boilers? We need this listed by boiler. Efficacy is the capacity for producing a desired result or effect; effectiveness. All boilers should be 100% efficacious in managing heating demands of the building it serves.

35. Please clarify the required propane scope for Buildings 201 and 202, including whether existing propane storage and distribution are available or whether tanks, regulators, piping, and associated equipment are to be provided by the Contractor. Propane supplies nor hook ups are not available and not in the scope of this project. Boilers must be dual fuel however permanent propane connections are not available. Gas trains should be piped out to the exterior of the building with a main regulator to be provided by contractor

36. Please provide the required quantities and locations of CO/combustible gas detectors and automatic gas shutoff valves for each building and identify whether existing emergency-power circuits are available. Emergency circuits are available. CO/combustible gas detectors and automatic gas shut-off valves are not currently installed and will have to be added to existing utilities.

37. Please provide the sizes of the automatic gas shutoff valves you want installed by building. BLDG 1- 4” BLDG 2-3” BLDG 3-3” BLDG 4-2” BLDG16-4” BLDG 25-4” BLDG 28-4” Please clarify whether hazardous-material or mechanical abatement is included in the Contractor's scope and provide applicable surveys, locations, and quantities. If abatement is required, contractors are responsible for any abatements Records from safety dept below B1 Room 12 – Flooring- Negative for ACM Insulated Piping- Positive for ACM- Caveat mechanical room has been re-piped since last survey ACM removed

B2 Room 7 – Flooring- Negative for ACM Insulated Piping- Negative for ACM

B3 Mech Room – Flooring- Negative for ACM Pipe Insulation- Negative for ACM

B4 Room 105- Flooring – Negative for ACM Pipe Insulation – Negative for ACM

B16 Room 13K - Flooring- Negative for ACM Pipe Insulation- Negative for ACM

B25 Room 40 – Flooring- Negative for ACM Pipe Insulation- Negative for ACM

B28 Mech Room– Flooring -Negative for ACM Pipe Insulation- Negative for ACM

38. The solicitation states, “All solicitation materials (drawings, specifications, contract forms, Amendments, and other documents) will be posted to the Contract Opportunities Government website at https://sam.gov/. Enter “36C24926R0077” into the search box to access the materials. This is the only official location where documents and updates are posted. No hard-copy solicitation materials are available.” Please provide the drawings and specifications that are referenced in the solicitation document. Unsure of what all is mentioned in the solicitation.

39. Please identify all materials, equipment, and supplies identified by the Government in any drawing or specification as the basis of design in any drawing or specification that require a Buy American Act waiver. Unsure of what all is mentioned in the solicitation.

40. How many parking spaces will be provided for on-site contractor parking? Parking provided in laydown area-assume equivalent of 10 standard spaces

41. Please provide any available existing mechanical and electrical drawings for the affected boiler rooms and associated systems. Cannot locate any drawings for current layout of mechanical rooms.

42. Please provide a complete existing boiler schedule for each affected building identifying manufacturer, model number, quantity, input MBH, output MBH, design supply/return temperatures, design flow rate, operating pressure, fuel type, electrical characteristics, and any other available equipment data required to properly size and price the replacement boilers. See boiler summary provided at end of document.

43. Please confirm that all experience, qualifications, past performance, and other requirements identified under Factor 1 and Factor 3 must be demonstrated exclusively by the Prime Offeror, and that experience, qualifications, or past performance possessed by subcontractors or teaming partners of the proposed contractor team will not be considered or credited in any manner for purposes of satisfying these factors. Should be possessed by Prime Offeror and/or Superintendent

44. Please confirm whether a single individual may be proposed to serve concurrently as both the Project Manager and Site Superintendent for this project, provided that individual meets all applicable Factor 2 – Key Personnel Experience requirements and all project supervision requirements. COR has no issue with this

45. Factor 2 – Key Personnel Experience: Please confirm that the requirements under Factor 2 may be satisfied collectively by the proposed Project Manager and/or Site Superintendent, and that both individuals are not required to independently satisfy Requirements 1–4. Unsure what is in the solicitation

46. Laydown Area and Material Storage: Please confirm whether the VA will provide a designated contractor laydown area and/or on-site material storage and parking area for the duration of the project, or whether the contractor should include the cost of off-site material storage and associated requirements in its proposal. Laydown area provided Asbestos-Containing Materials: During the site walkthrough, placards were observed indicating the presence of asbestos beneath the boiler floors; please clarify the extent of known or suspected asbestos-containing materials within the boiler rooms, including whether asbestos is present on the existing hot water piping or piping insulation. If ACM's are present and must be disturbed by mechanical scope of work, does the VA intend for the contractor to perform abatement or shall the VA provide abatement by a third-party. If abatement is required, contractors are responsible for any abatements Records from safety dept below B1 Room 12 – Flooring- Negative for ACM Insulated Piping- Positive for ACM- Caveat mechanical room has been re-piped since last survey ACM removed

B2 Room 7 – Flooring- Negative for ACM Insulated Piping- Negative for ACM

B3 Mech Room – Flooring- Negative for ACM Pipe Insulation- Negative for ACM

B4 Room 105- Flooring – Negative for ACM Pipe Insulation – Negative for ACM

B16 Room 13K - Flooring- Negative for ACM Pipe Insulation- Negative for ACM

B25 Room 40 – Flooring- Negative for ACM Pipe Insulation- Negative for ACM

B28 Mech Room– Flooring -Negative for ACM Pipe Insulation- Negative for ACM

47. Boiler Service Clearances: In Building 1, the existing boilers appear to have insufficient clearance from the existing electrical switchgear to accommodate the required service clearances for the replacement boilers or the existing switchgears; please clarify whether the replacement boilers are required to remain within the existing boiler footprint or should be relocated as necessary to meet manufacturer-required clearances. Relocation is allowed but boilers and ancillaries must have service clearances

48. Boiler Staging and Redundancy Controls: Please confirm whether the replacement boilers are required to operate under coordinated lead/lag staging within each building, and if so, whether that staging is to be accomplished through the boiler manufacturer’s onboard/cascade controls or programmed through the existing Johnson Controls Metasys system. Lead Lag not required

49. Boiler Pumps – New or Existing: Please confirm whether new boiler pumps are required as part of the replacement work or whether the existing boiler pumps are to be reused. Existing building pumps can be reused circulating pumps must be added new on boiler side of hydraulic separator.

50. Boiler Pump Configuration: Please clarify whether the replacement boiler pumps are required to be externally mounted within the boiler piping or integral to the boilers and contained within the boiler housings. Building pumps are not to be replaced. Boiler circulating pumps should be mounted external to the boiler housing

51. Gas Supply Adequacy: Please confirm whether there are any known natural gas supply or gas-starving issues at any building under current operation, and whether each existing boiler is fully satisfied at its rated input under present conditions. The contractor intends to select replacement boilers with equal input, equal or greater output, and equal or lower gas pressure (in. w.c.) requirements. No known issues

52. Propane System Scope (Buildings 201 & 202): For the dual-fuel requirement at Buildings 201 and 202, please clarify the full extent of the propane scope, including who furnishes the propane storage tank(s), tank sizing and setting, propane regulators, automatic fuel-transfer controls, and yard piping from the tank to the building. Propane supplies nor hook ups are not available and not in the scope of this project. Boilers must be dual fuel however permanent propane connections are not available. Gas trains should be piped out to the exterior of the building with a main regulator to be provided by contractor

53. Existing Venting Reuse vs. New: Please confirm whether the existing boiler venting may be reused for the replacement boilers, or whether all-new venting is required. The Statement of Work appears to require new venting throughout; please confirm this is the VA's intent. New venting throughout using existing wall penetrations

54. Maxon Safety Valves: Please confirm whether Maxon is the only acceptable manufacturer for the boiler safety valves or whether equivalent products from other manufacturers will be permitted. Equivalent products are acceptable must be capable of shutting down on existing Estop and manual reset with BAS alarm

55. Safety Valve Strainers/Filters: The specified Maxon safety valves require upstream strainers or filters; please confirm whether the contractor is required to provide and install these upstream strainers/filters as part of the project scope. Contractor is required to provide and install

56. Hydraulic Separation Method: Please clarify whether the VA requires a dedicated hydraulic separator device or whether hydraulic separation may be achieved through an alternative acceptable method, such as closely spaced tees, a low-loss header, or another suitable hydronic decoupling arrangement. Closely spaced tees should be used for hydraulic separation

57. Hydraulic Separator Manufacturer: If a dedicated hydraulic separator is required, please confirm whether the VA has a preferred manufacturer or whether equivalent products from multiple manufacturers will be acceptable. Closely spaced tees should be used for hydraulic separation

58. Hydraulic Separation Quantity: Please clarify whether hydraulic separation is required for all boilers included in the project or only at specific boiler plants/locations. A primary/secondary loop configuration is to be installed with circulation pumps for each boiler and hydraulic separation between primary loop 2 boilers and pumps and secondary loop the rest of the building

59. Prohibited Boiler Manufacturers: During the site walkthrough, the VA indicated that at least one boiler model (Areco’s Modulex) was prohibited from use on this project; please identify if there are more prohibited manufacturers or models. Is Aerco permissible at all or is only Modulex models prohibited? Modulex models are prohibited and any other aluminum boiler.

60. Magnetic Separation and Water Quality: Please provide the required hydronic water-quality criteria or available water-quality testing results and clarify whether magnetic dirt/particle separators are required as part of the boiler replacement scope. Existing water quality is good. Follow these requirements at start up pH: 7.0 to 10.0 (consult manufacturer for exact specification) Total Hardness: < 50 mg/L (as CaCO₃) Chloride: < 50 mg/L Sulphate: < 50 mg/L Conductivity: 500 μS/cm or less Total Iron: < 0.1 mg/L Total Suspended Solids: < 10 mg/L

61. Expansion Tank, Air Separator, and Make-Up Water: Please clarify whether the existing expansion tanks, air separators, and make-up water assemblies are to be reused or replaced, and whether a hydraulic separator with integral air/dirt separation is intended to replace the existing standalone air separator. existing expansion tanks, air separators, and make-up water assemblies are to be reused

62. Existing Piping Scope: Please clarify the required limits of demolition and replacement of the existing boiler piping, including whether the contractor is to make only the connections necessary to the replacement boilers or extend piping modifications back to the existing isolation valves or other upstream/downstream points. A primary/secondary loop configuration is to be installed with circulation pumps for each boiler and hydraulic separation between primary loop 2 boilers and pumps and secondary loop the rest of the building. Scope includes installation of primary loop piping and circulating pumps and replacement of boilers and tying in primary loop to existing secondary loop. In 2 pipe buildings 4 and 25 the ability to valve over from heating to cooling must be maintained, valves to isolate the primary loop must be installed all other valves affected will be on the secondary loop and should not interfere with the scope of this contract. In all buildings isolation valves must be installed at the supply and return of each boiler

63. System Cleaning and Flushing: Please clarify whether the VA has any requirements regarding cleaning or flushing of the existing hydronic system prior to placing the new boilers in service, to help protect the new boiler heat exchangers. Existing boilers are chemically treated with corrosion inhibitor 13110 by Momar to a conductivity target of 1000 µS

1. Pre-Cleaning Inspection Visually inspect piping and equipment for debris, construction materials (such as welding slag or pipe dope), and other contaminants.

2. Initial Flush Perform a high-velocity water flush of the entire system.

Typical velocity: Minimum of 3 feet per second (fps) is recommended to mobilize debris, according to ASHRAE and ASME.

3. Cleaning Solution Circulation circulate an appropriate cleaning chemical Examples: Detergents, degreasers, or scale removers.

4.Secondary Flush After chemical cleaning, thoroughly flush the system with clean water until water is free of chemical.

5. Water Quality Testing Collect samples to test for turbidity, pH (typically 7.5–9.0), TDS (Total Dissolved Solids), and absence of visible contaminants.

6. Passivation Circulate a passivating solution— corrosion inhibitor Momar 13110 currently being used in all buildings—to protect pipework targeting 1000 µS

7. Documentation Record flow rates, velocities achieved, cleaning agents used, and water test results.

64. Boiler Controls and Johnson Controls Integration: Please provide the required control points for the replacement boilers. This will impact the number of sensors and I/Os. 16 inputs 16 outputs

65. SSHO: Does the VA require the Contractor provide a Site Safety and Health Officer(SSHO) for this project. If so, please indicate if this person can be dual-hat by the Site Superintendent and whether it is required that this individual be on site at all times work occurs. Yes, can be dual-hat as long as there is a separate PM. One person cannot be PM, superintendent, and safety officer.

66. Exhaust Flue and Combustion Air Routing: If new flues and combustion air intakes are required, is it the Contractor's discretion on the routing? For example, as long as it meets the manufacturer's requirements and code, may the Contractor use new penetration locations or run through a different wall than what exists today, with VA approval? Existing penetrations should be used

67. Warranty: We understand the standard one-year construction warranty (FAR 52.246-21) covers labor and materials. Beyond that, does the VA require any extended manufacturer warranty on the boilers or their components (for example, the heat exchanger), and if so, for how many years? Please also confirm whether the standard manufacturer’s warranty is acceptable. No other warranty requirements

68. Low NOx Requirement: Some of the existing boilers being replaced are low NOx units. Please confirm whether the replacement boilers are required to be low NOx, and if so, specify the applicable NOx emissions limit or standard the new boilers must meet. ≤10 ppm Nox per 1000MBH input

69. Condensate Neutralization: The Statement of Work does not specifically call for condensate neutralization kits. Existing neutralization kits are present at the boilers today. Please confirm whether the Contractor is required to provide new condensate neutralization kits for the replacement boilers, or whether the existing kits are to be reused. Reuse existing

70. Sequence of Work: Please clarify whether the VA has a required sequence or phasing plan for the boiler replacements, including any restrictions on the number of boilers or buildings that may be taken out of service concurrently. No restrictions on working in multiple buildings concurrently.

71. Boiler Mounting: The existing boilers in Buildings 201 and 202 are wall-mounted. Please confirm whether the replacement boilers in these buildings are required to be wall-mounted, or whether floor-mounted units are acceptable. Wall mount or floor mount is acceptable however footprint of equipment must allow for all equipment in ALL buildings mechanical rooms to be easily accessible and serviceable

72. Due to limited space in the existing boiler rooms and difference in layout room by room, will all boilers be required to be procured from the same manufacturer? Please clarify as utilizing different manufacturers would allow for better solutions to be proposed. All boilers should be from the same manufacturer

73. Existing Equipment List: Please provide the existing boiler schedule, models, and output MBH capacities for Buildings 1, 2, 3, 4, 16, 25, 28, 201, and 202. See provided boiler summary

74. Propane Backup (B201 & B202): Please confirm the design MBH and pressure requirements for the propane backup systems serving Buildings 201 and 202. Pressure requirements will be determined by equipment to be installed.

Boiler Room Summary

Located in each building are independent boiler rooms excluding locations equipped with geothermal or conventional heat. Buildings listed below are equipped with low pressure condensing boilers providing hydronic heating to a variety of end user equipment. Boilers also provide hydronic heating to water to glycol heat exchangers supplying heated glycol to Air Handler Units. All Boiler rooms are supplied with regulated make-up water inputs with bypass option.

· Building 1 is equipped with 2 – 3 million BTU Aerco BMK3.0LN Benchmark Low NOX, natural gas condensing boilers, 2 variable speed pumps, 1 feed water regulator.

· Building 2 is equipped with 2 – 651,000-696,000 BTU Aerco Modulex MLX 757H, natural gas condensing boilers, 2 variable speed pumps

· Building 3 is equipped with 2 – 1.5 million BTU Aerco BMK1.5LN Benchmark Low NOX, natural gas condensing boilers and 2 variable speed pumps.

· Building 4 is equipped with 2 – 521,000-558,000 BTU Aerco Modulex MLX 606H, natural gas condensing boilers and 2 variable speed pumps

· Building 16 is equipped with 2 – 3 million BTU Aerco BMK3.0LNBenchmark Low NOX, natural gas condensing boilers and 2 variable speed pumps.

· Building 25 is equipped with 2 – 3 million BTU Aerco BMK3.0LN Benchmark Low NOX, natural gas condensing boilers and 2 variable speed pumps.

· Building 28 is equipped with 2 – 3 million BTU Aerco BMK3.0LN Benchmark Low NOX, natural gas condensing boilers and 2 variable speed pumps.

· Building 201 is equipped with 2 –206,000 BTU Weil-McLain EVG 220, natural gas condensing boilers and 2 variable speed pumps.

· Building 202 is equipped with 2 –206,000 BTU Weil-McLain EVG 220, natural gas condensing boilers and 2 variable speed pumps.

Amendment 0001 for Solicitation 36C24926R0077 Project 596-26-4 FMS Boiler Replacement.