33330226RF0010002 Amendment 0003.pdf

(x)

33330226RF0010002

x x

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 electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT 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 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.

x

OCON

Washington DC 20013-7012 PO Box 37012

MRC 1200

OCON

OCON

Washington DC 20013-7012 PO Box 37012

MRC 1200

SMITHSONIAN INSTITUTION

04/28/20260003

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

12. ACCOUNTING AND APPROPRIATION DATA (If required) is not extended.is extended, Items 8 and 15, and returning

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: (a) By completing

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

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

FACILITY CODE CODE

10B. DATED (SEE ITEM 13)

10A. MODIFICATION OF CONTRACT/ORDER NO.

9B. DATED (SEE ITEM 11)

9A. AMENDMENT OF SOLICITATION NO.

CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

7. ADMINISTERED BY (If other than Item 6)CODE 6. ISSUED BY

PAGE OF PAGES

4. REQUISITION/PURCHASE REQ. NO.3. EFFECTIVE DATE2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO. (If applicable)

1. CONTRACT ID CODE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

03/12/2026

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

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

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

ORDER NO. IN ITEM 10A.

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

A. The Solicitation Number cited above, to upgrade Sanitary and Storm Systems at the

National Museum of Natural History (NMNH), located in Washington, DC, is hereby amended as follows:

A.1. Attached hereto and made part of this Amendment Three are the SI Responses to RFI's for Questions Number 1-75.

A.2. Attached is the updated Multi-Year Document.

A.3. Offerors shall acknowledge receipt of all amendments to this solicitation signed and dated and submit with proposal.

Continued ...

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

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

Thomas Dempsey

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

Previous edition unusable

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 10A, as heretofore changed, remains unchanged and in full force and effect .

ITEM NO. SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

NAME OF OFFEROR OR CONTRACTOR

2 10

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGE OF

(A) (B) (C) (D) (E) (F)

33330226RF0010002/0003

B. Attached is the sign-in sheet for the 2nd site visit held on April 27, 2026.

C. The due date for RFI is Monday, May 4, 2026.

Please submit all questions and clarifications in sequentially numbered sets. For example, the first set should include questions 1, 2, and 3, the second set questions 4, 5, and 6, and so on.

All submissions should be in Word format and sent to ChanVC@si.edu.

D. The Due Date for Receipt of Proposals is May

20, 2026, at 3:00 PM EST.

Except as provided herein, all other provisions, terms and conditions of the Solicitation remain unchanged.

END OF AMENDMENT THREE

NSN 7540-01-152-8067 OPTIONAL FORM 336 (4-86)

Sponsored by GSA

FAR (48 CFR) 53.110

1600103 NMNH Upgrade Sanitary and Storm Systems April 28, 2008

Upgrade Sanitary and Storm Issued April 28, 2026

NMNH

Bid Phase RFIs

Number Date Received Discipline Question Response

1 4/14/2026 General

1. Please consider extending the deadline for RFIs from April

14, 2026 to April 24, 2026 Deadline extended per Amendment 2.

2 4/14/2026 General

The current Bid Schedule requests costs by division to be submitted by material, labor, and equipment. Please consider accepting a combined cost by division. Collecting broken down costs from subcontractors on bid day will be a challenge within a time constraint. Broken down costs are a requirement.

3 4/14/2026 General

2. Solicitation section Part B states the contract documents include drawings “Volume 2, sheets 1 through 438” and “Volume

3, sheets 1 through 533”. Please confirm that Volume 2 only contains 264 sheets and Volume 3 only contains 99 sheets.

Drawings: Volume 1, Sheets 1-178; Volume 2, Sheets 179- 438; Volume 3, Sheets 439-533 Sheets 1-4 are repeated at the front of all volumes.

4 4/14/2026 General

3. In addition to the above question, the contract documents for the design manual only includes pages 1 through 14 in section Part B. Please confirm if the design manual, including the attached schedule, is part of the contract documents. Design manual is provided for information only.

5 4/14/2026 General

4. The provided design manual describes toilets rooms are to be renovated at one stack of a time starting from the top and working down, but the included construction schedule shows work taking place bottom up. Please confirm the approach to this project.

Design manual is provided for information only. One stack at-a-time is required. Top or bottom start, to be determined by contractor means and methods.

6 4/14/2026 General

5. Option 3 on G-100 indicates Roof Scuppers for Phase

01B, C, D, and E. Bid Schedule notes epoxy repairs after storm piping installation. Please clarify what this scope of work entails as there are no roof plans showing scuppers and the plumbing drawings indicate existing roof drains to remain.

Roof Scupper locations are indicated in the Main Building attic plans in the Plumbing set in Vol #2. See detail A6/P506.

Spec 220110.62

7 4/14/2026 General

6. General Requirement notes on G-100 notes all work must be performed after hours. Phase 01B and 01D specifically note that work to stop by 5am. Please clarify what working hours are acceptable for the overall project.

Off-Hours requirements are defined on 14.2.a of 010000 Supplementary Conditions for Construction of the specifications. Acceptable hours are noted throughout the document for specific areas of the building and types of work.

8 4/14/2026 General

7. Period of performance is noted to be 740 days on the solicitation for both base contract and options 1-3, if exercised.

Please confirm that the base bid is to include 740 days of performance and no additional time is associated with any of the

3 options.

See 010000 4. Schedule of Options for Bid for additional time associated with each option.

9 4/14/2026 General

8. Solicitation states proposals are due on May 11, 2026 and amendment 1 states proposals are due May 12, 2026. Please confirm the bid date and time.

See SAM.gov for official due dates. Dates have been clarified by amendment.

10 4/14/2026 Civil

Civil demolition and restoration plans do not show any below grade utility removals. Please confirm existing site utilities are to remain and this project is limited to new utilities shown on C-106 through C-111.

Civil plans indicate new storm lines and the existing systems they connect to. Existing site utilities are to remain.

11 4/14/2026 Architectural

Specification 064200 appears on the finish schedule but is not found within the specifications. Please provide specification for countertops.

Countertops are included in the 064100 - Architectural Cabinets Specifications in Vol #1.

12 4/14/2026 Structural

1. Structural drawing S-100FP notes one slab on grade removal near column line WH L within the West Hall that is within unexcavated space per A-100FP. Please confirm this is the extent of the slab on grade removal and no additional removals are required to reach the nearby tunnel.

The extent shown on S-100FP is only graphical, the actual size of the slab removal and excavation as noted will need to be determined by the contractor based on equipment working clearance and safety requirements. The piping which this work relates to is stormwater piping which comes down from the upper levels turns out and penetrates the foundation wall, it does not connect to the tunnel. There is other work shown on the plumbing drawings, for example, the plumbing for the sink in the same room, Shipping Office 63A, which may require local areas of slab demo and replacement to complete the work. Not all these areas are shown on the structural drawings, but typical detail A5/S-501DT would apply at these conditions.

13 4/14/2026 Structural

2. Detail E7/S-301SC notes the thickness of the foundation wall is 11’ and detail A7 notes foundation wall to be 5’-4 ½”.

There are 7 areas called out on the civil drawings for utility work.

On S-100 there are only 5 penetrations shown with a note of 2 additional. Please provide clarity on which detail applies to the 4 foundation locations not called out.

On drawings S-100, the one location shows in the west wing, one location shown in the east wing, and the 2 additional locations referenced in the note which can be seen on C-107 cover the 4 locations that are not penetrating through the main building thick foundation walls. These 4 locations in the wings will be cored through a typical approximately 14” thick reinforced concrete foundation walls. As indicated in the note, “SCAN WALL IN AREA OF PROPOSED PENETRATION

AND OFFSET CORE TO AVOID VERTICAL WALL

REINFORCING”. This work is similar to the slab penetrations in detail F5/S-501DT and please refer to specification 220500 for wall penetration and seal information.

14 4/14/2026 Mechanical

1. Specification 072123 Loose Fill Insulation notes that expanded perlite loose fill insulation is to be used for abandoned cast iron piping but the plumbing drawings call for spray foam.

Please confirm the intent for filling abandoned pipes to remain.

Abandon pipe filling to be expanded perlite loose fill insulation. This is typical to all abandon pipe locations.

15 4/14/2026 Mechanical

2. Plumbing drawings show various locations where existing sink stations located within office spaces are to be removed

(example on PD-1ER3N) and refers to architectural drawings to see wall repair. Please provide architectural information that shows wall repair detail and associated repairs to wall/floor finishes.

Contractor shall patch, repair, and infill existing wall construction to match existing wall construction (IE. CMU, Terracotta, GWB) where applicable provide fire rated patching , infill and repairing. See PATCH AND REPAIR NOTES on G-005SH.

16 4/14/2026 Mechanical

3. Plumbing drawings show 2 scenarios for the typical building storm stack. Please verify the purpose of the 2 scenarios and which scenario should be included as the base bid.

Scenario's indicate one where the piping would be replaced in the general area of the existing system and the other is indicating an offset scenario to another location

17 4/14/2026 Mechanical

4. Detail A1/G-101 shows a temporary enclosure assembly.

Temporary partitions are seen on G-103 through G-106. What is the scope of work related to the temporary enclosure?

The temporary enclosures are to be utilized at Main Building logistics locations: A1, E4, on G-103.

18 4/14/2026 General

1. RFP states that the total duration of the project is 740 calendar days but Spec 10000 part 3.1 states that the duration is 730 calendar days. Please clarify which is correct.

Project Duration is 730 days plus time as listed for bid options if exercised.

19 4/14/2026 General

2. Per the RFP pg 14 of 122, it states that the period of performance for this project is 740 calendar days for Base &

Option 1-3 but Spec 10000 states PoP extensions for each

Option. Please clarify the duration of this project if Option(s) are exercised. see 18 above.

20 4/14/2026 General

3. On the Multi-Year Funding Document (page 12) FY 26 indicates to include 2 months of general conditions, FY 2027 indicates to include 12 months of general conditions, and FY

2028 to include 12 months of general conditions. That equals

26 months/780 calendar days. The period of performance for the project is indicated at 740 calendar days or 976 calendar days if all options are awarded. Please advise. FY2028 is available for number of days remaining to reach the 730 contract days. Multi-year document to be updated.

21 4/14/2026 General

4. Reference Add Option 3. Please provide a detail and specification for the epoxy repairs at the Main Building Attic

Roof Scuppers. See question 6 above.

22 4/14/2026 Architectural

5. Confirm plaster patching is to occur only where exposed to view and not at all locations, an example of not exposed from view being above an ACT ceiling in the bathrooms where

Unistrut support attachments occur (ref: A1 / S-501 DT) Repair in all instances include above ceiling.

23 4/14/2026 Architectural

6. Reference Spec 040110 - Masonry Cleaning. Please clarify what work on the drawings fall under this specification. Is there exterior masonry cleaning? If so, indicate where on the drawings. It is not anticipated that this spec will be utilized.

24 4/14/2026 Architectural

7. Spec Section 101423 - Panel Signage has a list of manufacturers to provide products from. Would other manufacturers that are not listed be acceptable if they meet all requirements stated in the specs?

Yes, other manufacturers are acceptable if they meet all requirements of the specifications

25 4/14/2026 Architectural

8. Spec Section 101423 - Panel Signage calls for "Solid sheet sign and returns, Bronze Sheet," but there is no mention or definition of this bronze sheet in the drawings or specs.

Please provide meaning of the bronze sheet mentioned. Is it color, acrylic, row mark, or metal?

Signage material to be acrylic. Acrylic Sheet: ASTM D 4802, Category A-1 (cell-cast sheet), Type UVA (UV absorbing).

26 4/14/2026 Architectural

9. Spec Section 101423 - Panel Signage states to "refer to drawings for sign thickness," but there is no mention of the sign thickness in the drawings. Please provide thickness to the signage needed.

Sign thickness to be the Manufacturer's standard thickness for the size of sign indicated in the drawings.

27 4/14/2026 General

10. Finish Keynote 2 on the Interior Finish Plans (I-401NP through I-406NP) reference an add alternate to install TZ2 and IB2 in lieu of TF1, TF2, and MB1 in Toilet Rooms with flooring and RF1 and B2 in Dash Elevator Lobbies. There is not currently a section on the bid form for this terrazzo add alternate, please advise how this alternate is to be provided.

Terrazzo is part of the base bid. Drawings to be updated.

28 4/14/2026 Mechanical

11. Per Dwg MD101DP, please confirm sheet notes #4, #5, #6, #7, #8, #9, #10, #11, #12, #13, #15 and #16 will not be required on this drawing. If required, please indicate and show where.

Sheet note legend is shown on every sheet for consistency.

See Drawings for applicable sheet notes. Not all notes are used on each sheet.

29 4/14/2026 Mechanical

12. Per Dwg MD102DP, please confirm sheet notes #2, #3, #4, #5, #6, #7, #8, #9, #10, #11, #12, #13, #15 and #16 will not be required on this drawing. If required, please indicate and show where. See question 28.

30 4/14/2026 Mechanical

13. Per Dwg MD103DP. Please confirm sheet notes #2, #3, #4, #5, #6, #7, #8, #9, #10, #11, #12, #13, #14, #15 and #16 will not be required on this drawing. If required, please indicate and show where. See question 28.

31 4/14/2026 Mechanical

14. Per Dwg MD104DP, please confirm sheet notes #3, #4, #5, #6, #7, #8, #9, #10, #11, #12, #13, #15 and #16 will not be required on this drawing. If required, please indicate and show where. See question 28.

32 4/14/2026 Mechanical

15. Per Dwg M401DP, General Note #3, please indicate where this note will be required, plus provide quantities of how much existing supply and return ductwork will need to be demolished.

A rough estimate of existing supply and return ductwork in the womens restroom to be demolished includes: 36 ft. of 12"x8" return ductwork, 35 ft. of 8"x6" return ductwork, 13 ft. of 12"x8" supply ductwork, 8.5 ft. of 8"Ø supply ductwork, (4) exhaust registers and (2) supply diffusers.

33 4/14/2026 Plumbing

16. Per Dwg P-001, Plumbing General Note #33, does all existing piping insulation within the attic need to be removed and install new canvas insulation? Do the drawings show all existing piping? If no, please provide sizing and quantities of all existing piping.

All existing piping within the attic is to be replaced, so yes all new canvas insulation is required. Yes, all existing piping is documented.

34 4/14/2026 Plumbing

17. Per Dwg PD-1R0T, Plumbing General Note #1, regards to retaining all of the 2-band couplings, does this note mean that we must remove and handover all existing 2-band couplings to the owner? If no, please provide an explanation of scope for the first sentence.

Yes, all existing 2-band couplings removed shall be given to

COTR.

35 4/14/2026 Plumbing

18. Per Dwg PD-1R0T, Plumbing General Note #1, we assume all exposed and concealed sanitary and storm piping 2-band coupling will need to be replaced. Do the drawings show demolition of all existing walls / ceilings to be demolished and replaced with new throughout the entire building?

Yes, all existing piping will be replaced. The drawings do not show every patching location and the walls will require patching after removal and installation of piping.

36 4/14/2026 Plumbing

19. Per Dwg's PD-1NHTN & P-1NHTN / Detail B3, it shows a crossed-out section that says abandon, fill and cap existing piping in this inaccessible area, however a few of these systems within this area must stay live during and after construction. Please explain what systems will need to be abandoned, filled and capped.

The pipes in the inaccessible area are to be capped after removal of the existing piping indicated to be removed.

37 4/14/2026 Plumbing

20. Per Dwg's PD-1WWBS, PD-1WW0N, please confirm there will be no plumbing work required on these drawings. Are we required to change out all 2-band couplings with 4-band couplings on both Sanitary and Storm systems within these areas?

2-bands will be replaced with 4-bands at locations as indicated. In Plumbing General Notes on sheets. I.E. P-1EHT

38 4/14/2026 Plumbing

21. Per Dwg's P-1RO0, P-1RO0M, P-1RO1, P,1RO2, P-1RO3, regarding the Rotunda Ground, Mezzanine, First, Second, Third Floors, SD-NH Risers #1 & #2, is there an access door to remove and install the new piping systems within the wall cavities. If not, please indicate locations where walls will need to be cut/patched to accommodate access. Yes, access hatches / doors are located on each level of the rotunda. See P-1R0T - P-1R0R.

39 4/14/2026 Mechanical

22. Regarding specification 230500, pages 20 and 21, section

3.10 Cleaning of Systems. Do we need to clean all existing

and new ductwork throughout the entire building? If yes, please provide drawings showing all scope of work. If yes, but partial duct cleaning of existing ductwork only, please show all work.

Cleaning of ductwork, piping, and equipment only applys to the Div. 23 - Mechanical scope within this SI-NMNH Upgrade Sanitary and Storm Systems project.

40 4/14/2026 Civil

23. For the Storm Water Systems work on the exterior per the C-Series drawings, please clarify which areas are Base Bid

(Main Building), Option 1 (West Wing) & Option 2 (East Wing) Base Bid (Main Building): Locations 1,4,5,6,7 Option 2 (East Wing): Locations 2,3

41 4/14/2026 Architectural

24. On Signage Schedule I-601SH, there are some rooms missing. For example, Restroom 337, and MNHCR304 do not show on the signage schedule. Do missing rooms require signage? If so, please provide sign type for these rooms.

Room 337 will maintain existing signage. MNHCR304 is a corridor that does not require signage.

42 4/14/2026 Architectural

25. Confirm that only (1) new corner guard is required in the project and it is in Custodial Storage 98A.

Assume approximately (36) corner guards total on the project. Additional corner guards are required in Elevator Lobbies and Corridors where new walls are built. SI to confirm if existing areas receiving new wall paint will receive new corner guards or if existing corner guards will be reinstalled after new work is completed.

43 4/14/2026 General

26. Specification 024119 paragraph 1.5.D says to comply with

Section 013233 " Photographic Documentation". This specification is not included. Please provide this specification or clarify any requirements for picture size, quality, quantity, etc. for preconstruction photographs.

EC: Photographic Documentation is incorporated in Section 43 of the 010000 Supplementary Conditions for Construction. 013233 is not provided.

44 4/14/2026 Hazmat

27. In specification 024119 paragraph 1.7.E it states that the

Owner is to remove "Asbestos and crystalline cilia" but the drawings call for the contractor to remove the asbestos containing materials. Please clarify who is responsible for the asbestos abatement. Contractor is responsible for all abatement.

45 4/14/2026 Mechanical

28. Per detail #C7 on drawing M-801CP, please indicate where there will be a requirement for Hydronic Leak

Detection. Detail #C7 shows a drain pan with leak detection under Plumbing Storm Sanitary Piping, however not a

Hydronic System? Please show this scope of work on the drawings and where required.

Detail C7/M-801CP provides additional information for the Plumbing Storm Sanitary Piping leak detection controls sequencing. Leak detection locations are indicated on sheet

P-1EH2.

46 4/14/2026 Plumbing

29. Per Plumbing General Note #33 on drawing P-001, do all new and existing exposed piping within the attic require new insulation or just newly installed piping. If existing piping also, please provide quantities of exposed piping systems.

See question 33.

47 4/14/2026 Plumbing

30. Per Plumbing General Note #33 on drawing P-001, please provide quantities and sizing of damaged pipe insulation. If not shown or quantities are not provided, please provide a bid form allowance for this scope of work.

All existing sanitary and storm piping indicated to be removed will require insulation replacement as documented.

Damaged insulation would be determined by the extent of existing pipe removal and replacement.

48 4/14/2026 Plumbing

31. Per Plumbing General Note #7 on drawing P-001, please show all trap primer piping, connections and tie-ins.

Note #7 is to be omitted. Trap primers are not to be provided.

All floor drains will be provided with an inline trap guard as indicated on the Drainage Specialities Schedule.

49 4/14/2026 Architectural

32. Confirm level 5 finishes are required at all locations to receive drywall that is exposed to view. Confirmed

50 4/14/2026 Plumbing

33. Per drawing P-1WW4N, Existing Fixtures General Notes

#2, please indicate where the existing fume hoods and scrub sinks are located within this building.

Existing Fume Hoods and Scrub Sinks are Indicated on floor plans.

51 4/14/2026 Architectural

34. Confirm that there are no T-3 Restroom/Baby Changing panel signs needed for the project. None are shown on the signage schedule. Sign type T-3 is not needed for the project.

52 4/14/2026 Architectural

35. Are subcontractors required to use the manufacturers listed in spec section 101423 - Panel Signage? Or would a comparable in-house product be acceptable as long as it meets spec requirements? See question 24.

53 4/14/2026 Architectural

36. Provide thickness for panel signage needed for project.

Spec section 101423 - Panel Signage reads "Thickness: As indicated on Drawings." But there is no indication of the thickness for the signs in the drawings. See question 26.

54 4/14/2026 Architectural

37. Please confirm that the thresholds are to be disposed of.

The interior drawing I-003SH only show metal trim transitions where new tile is being installed.

Thresholds to be disposed of with exception of Marble thresholds to be salvage.

55 4/14/2026 Fire Protection

38. Where sprinkler pipe is being demolished or installed confirm pipe runs above ceiling. Confirm ceiling finish in areas piping will be removed/installed, reference F-409KP, F-

411 KP

Demolished piping runs below ceiling, New piping that runs outside of restrooms is exposed. Paint to match existing.

56 4/14/2026 Architectural

39. PD 1NH3N note to disconnect and remove existing sink and all associated waste and water piping back behind wall and repair wall per Architectural drawing directions, this is for kitchenette 375A and OIPP Chief's Office 375B. Please identify where this is located on the Architectural Drawings.

See Question 15.

57 4/14/2026 Architectural

40. Please clarify the solid sheet sign and returns Bronze

Sheet mentioned in the specification section 101423 - Panel

Signage. There is no mention of Bronze Sheet in the drawings. Is the bronze mentioned a color, acrylic, row mark, or metal, etc? See question 25.

58 4/14/2026 Plumbing

41. Confirm ceilings at OIPP Chief's Office and Electronic

Imaging Lab for pipe removal, reference PD 1NH3N and

PD1NH3S

Provide localized ACT ceiling removal as required to accomplish piping demolition. Salvage ACT ceiling components for reinstallation.

59 4/14/2026 General

42. Will an additional site visit occur for subcontractors to look at this project? If so, please provide a date and time.

Second site visit was scheduled for 4/27.

60 4/14/2026 Architectural

43. Detail A8 on A-418EP has a note 6 in the CCRE Lab but there is not note 6 under the drawing. Please clarify what this note is for. Note 6 at this location should be "Note 7".

61 4/14/2026 General

44. Please confirm financial statements can be submitted via email instead of uploaded to Box Link

All documents to be submitted per the solicitation instructions.

62 4/14/2026 General

45. Please confirm draft 2025 financials will be accepted in lieu of final 2025 financials as they are still under review This is acceptable.

63 4/14/2026 Architectural

46. Confirm ceiling finish where pipes are to be demoed out on 2nd Fl East Range, North, reference PD 1ER 2N

Ceiling is painted plaster. Patch, Repair, and Paint to match per PATCH AND REPAIR NOTES on G-005SH.

64 4/14/2026 Architectural

47. Confirm ceiling finish where pipes are to be demoed out on ground floor, west hall PD 1WH0 See question 63.

65 4/14/2026 Architectural

48. Confirm ceiling finishes where pipes are to be demoed out on ground floor, mezz, west hall PD 1WH0M See question 63.

66 4/14/2026 Architectural

49. Confirm ceiling finishes where pipes are to be demoed at

Service Corridor Hall 28B, reference PD 1WH2 See question 63.

67 4/14/2026 Plumbing

50. In reference to drawing PD-1EHT, please confirm the sanitary piping at CL ER2 & EH2 that is to be removed is exposed or overhead and not in the existing slab below grade. Piping indicated is located in the tunnel below ground level.

68 4/14/2026

Plumbing

51. On drawing PD-1EHT, there is some sanitary piping in an inaccessible area. Are there pictures of this area where the piping to be removed or can this piping remain abandoned & filled?

The pipes in the inaccessible area are to be capped after removal of the existing piping indicated to be removed.

69 4/14/2026 Architectural

52. Please confirm if all the ceilings at the Basement level are exposed and no ceiling work is required on that level.

Ceiling is exposed structural slab in basement unless noted otherwise.

70 4/14/2026 General

53. Please clarify if 3rd party testing is to be provided by the general contractor or the Owner?

Third party testing is by contractor with exception of IH as noted in 028300.

71 4/14/2026

Architectural

54. Detail A8 / drawing A-502DT shows (4) types of terracotta

& plaster repairs but does not provide any locations of repairs. Please provide a quantity or cost allowance for this work considering it is unknown.

It is assumed that every new penetration in an existing wall will required some level of patch, repair and/or infill. All existing penetrations that will not be reutilized must be infilled with a construction type to match existing adjacent construction. For new wall penetrations, contractor shall minimize new openings to the greatest extent possible to accomodate new penetrations. Contractor to coordinate all penetration locations.

72 4/14/2026

Architectural

55. Drawing PD-1EH3 shows the removal of existing sinks and piping in shared offices on the 3rd floor and references you to the architectural drawings for wall repair direction. Only architectural drawings & details provided are for the bathroom work. Please provide architectural drawings & details for wall repair work at these locations.

See Question 15.

73 4/14/2026

Architectural

56. Reference drawing PD-1EH3, please confirm all plumbing piping is exposed in the 3rd floor offices on the walls & ceilings and no wall or ceiling demo is required.

New piping is to be exposed . Existing waste piping to be abandoned. Please see P-500 for Office Sink logistics.

74 4/14/2026

Architectural

57. The Interior Finish Schedule on I-001SH includes a TZ1 product code for Ground Floor Access Hatches, Where

Indicated. The TZ1 code is not utilized on any other drawings, please advise on the location of these access hatches, or confirm that this product code can be removed.

TZ1 will be used at Access Hatch (AH-3).

75 4/14/2026

General

58. In reference to the multiyear funding increments form, its states that in FY2026 there is $8.5 million available, $5.5 million available for FY2027 on this project and remaining balance is to be carried for FY2028 (if applicable). Is the intent to provide true construction costs for each year even though more funds will be required in FY2027 and less in

FY2026 than the funding costs available or are bidders to utilize all the funds available in FY2026 & 2027 if more than

$14 million combined 2026 & 2027 and carry the rest in

FY2028? Work must be scheduled per the funding available in the multiyear plan and not exceed those values.

Project Tite: NMNH: Upgrade Sanitary & Storms Systems * Project Number: SF 73 1600103

The range for this construction project is over $10M

FY 2026 FUNDING INCREMENT: ($ 8.5M available in FY 2026)

General Conditions $ Mobilization $

SUBTOTAL: $

Termination Cost (Cancellation Charge) $

Other – Offerors shall clearly and completely describe items deleted/added to FY2026 Funding Phase

(Attach pages as necessary)

Identify and include description of long-lead time items.

TOTAL FY2026 $

(Express in Words and Figures)

FY 2027 FUNDING INCREMENT: ($ 5.5 M available in FY 2027 obligated by 11/30/2026 or when available)

General Conditions $ Sitework $ Temporary Field Office $ Submittals and Shop Drawings $ Long Lead Item Purchases $ Asbestos Abatement $ Demolition $ Carpentry (rough and finished) $ Laser Scanning $ Plumbing $ Mechanical $ Electrical $ Metals $ Fire Suppression/Fire Protection $ Specialties $

SUBTOTAL: $

Termination Cost (Cancellation Charge) $

Other – Offerors shall clearly and completely describe items deleted/added to FY2027 Funding Phase

(Attach pages as necessary)

TOTAL FY2027: $

FY 2028 FUNDING INCREMENT: (Balance of funding obligated by 11/30/27 or when available) General Conditions $ Sitework $ Temporary Field Office $ Asbestos Abatement $ Demolition $ Carpentry (rough and finished) $ Laser Scanning $ Plumbing $ Mechanical $ Electrical $ Metals $ Fire Suppression/Fire Protection $ Specialties $

As-Builts, O&M, Closeout, Demobilization, etc. $

Other – Offerors shall clearly and completely describe items deleted/added to FY2028 Funding Phase

(Attach pages as necessary)

TOTAL FY2028: $

BASE TOTAL (FY26-28): $

OPTION 1 (FY27): $

OPTION 2 (FY27): $

OPTION 3 (FY27): $

UNIT PRICE (Roof Scupper Repair) $