47PC0324R0008 083024 RFI Responses NYFO CHW Plant Upgrade.pdf

GC Bid Phase RFI Responses

RFI # RFI RFI Response

Project NYFO CHW Plant Upgrade

Spec section 02 82 00 ASBESTOS is not present in the document, will this be issued in an addendum or should it be omitted for purposes of estimating?

Refer to updated specifications.

2 Are there going to be any permits required? Permits are not required for NYC DOB, additionally refer to RFI #46 and #139 responses.

3 Is there a specific water-cooled chilled water plant required for this project? Such as brand, manufacturer, etc.. Refer to specifications (e.g. 23 64 16, 23 65 00)

The following Drawings are missing from Drawings, will they be provided in an addendum?

AD-123 TYPICAL DEMOLITION PLAN FLOORS 23-27

AD-128 TYPICAL DEMOLITION PLAN FLOORS 28-41

Refer to the updated drawing set.

Drawing E-345 provides us with a Heat Trace Cable Data Schedule, which refers us back to plumbing drawing P-145 which does not give any insight to the installation of the heat trace cables, can you provide more details on this HTC system whereas to how many control panels will be required, how many power points is required, etc.?

The number of control panels is dependent on which manufacturer is selected. The number of power points required is based on the schedule provided and circuit designation for heat trace is clearly shown on plan, E-345, referencing DP-44EM. Installation of Heat trace cable is directly on the pipes and covered by insulation.

Heat Trace Cable Data Schedule refers to mechanical drawing M-145, please note there is not such drawing shown on the Mechanical drawing list, please confirm which drawing should we refer to for reference?

Refer to Drawing M-345 for scope of condenser water line.

Drawing E-400, Please provide us with the existing switchgear manufacture information so we can get pricing for the new 1600 Amp Circuit Breaker to be installed in SWGR C.

The existing drawout circuit breaker was manufactured by Westinghouse.

Please provide us with the existing Parallel Switchgear manufacture’s information so we can get pricing for the extension Switchgear shown on drawing E-450.

Refer to RFI #07 Response.

Are there any requirements or restrictions for the generator to be dis-assembly upon delivery and be transported within freight elevators and be re-assembly on the 42nd floor?

It is allowable for generators, chillers, cooling towers, any other equipment / material for the contract to be disassembled upon delivery and reassembled on site.

The contractor must confirm with the equipment / generator manufacturers the method of rigging the equipment into the building along with the acceptable sections that the equipment / generator can be broken down and reassembled without voiding any warranties.

Re-assembly must be by or under the supervision of a certified manufacturer representative. Break down, reassembly, and rigging operations/ procedures must be reviewed by and be done by or under supervision of an authorized equipment / generator representative.

Bidders to confirm any materials / equipment can be accommodated by the freight elevators. Bidders shall abide by the following building requirements for freight elevator use:

Always distribute weight evenly around the elevator as much as possible.

Elevator operators have access to pallet jacks to check the weight of incoming freight.

Anything above the working weight capacity will require a safe lift; 75% of max capacity. Safe lifts will be at cost to the requestor.

Annex Freight (Max Capacity: 6,000 lbs.)

Working Weight: 4,500 lbs.

Elevator cab clear dimensions: 9'-8" x 7'-0" x 9'-9"H.

Annex Freight - 9’ L x 7’-2” W x 10’-0” H with 60"x84" doors

Drawing E-601 shows details on BFM Multi Channel Meter Head End Connections, and cat 6 cable wiring, please provide us the location of the Head End equipment.

Refer to updated drawings and specifications for location.

11 Drawing E-400 shows Panels UP-BMS-25 and UP-BMS-44 on the riser drawing, panel schedules are missing please provide.

The panels will be 12 pole panels. 8 active 20A, single pole breakers to power the DDC control panels found in the M-800 Series. The remain 4 poles shall be spaces.

Panel UP-BMS-25 & UP-BMS-44 on drawing E-400 shows indications to BMS Switches, please advise what wiring is required and is there any more information for this, see detail below.

The BMS switches can be found within the M-800 series. The switches will be for DDC control panels. The wiring shall be 3-#10 wires in 3/4" conduit. Each circuit shall power 3 DDC panels per branch circuit.

13 Please provide the fire alarm vendors contact information for this facility.

The building fire alarm vendor is Honeywell:

Cara Marino 516-697-8078 cara.marino@honeywell.com

14 Can the fire alarm cables be installed Free Air 8FT above finished ground or in conduit (Rgs or EMT) please advise.

Per the contract documents, and in reference to the GSA P100 "All fire alarm wiring must be installed in conduit. Conduit must be rigid metal or electrical metallic tubing, with a minimum inside diameter of 19 mm (3/4 inch) that utilizes compression type fittings and couplings.

Can we have a 2nd site visit so we can see the 42nd floor for the rigging of the genset and to see the existing switchgear and generator parallel equipment?

A second walkthrough will be announced separately from the GSA contracting officer.

16 Are there any MWBE/SDOVB requirements for this project?

No, there are no MWBE or SDOVB requirements for this project.

However, a subcontracting plan is required if the offeror is a large business. See Factor 5 information in the solicitation and the Small Business Subcontracting Form (included in the solicitation as Attachment A5). Also refer to the FY2024 Small Business Goals by agency:

And also note for the purposes of FAR 52.236-1, Performance of Work by the Contractor, the Contractor shall perform at least twelve (12%) percent of the construction work.

17 Will storage space be provided for us for our day-to-day materials? The 42nd Floor Annex generator room is available for material storage.

18 Is this a union project or a prevailing wage project?

Both. This project requires a Project Labor Agreement (PLA), which can include both union and non-union members (see factor 6). The Wage Determination no. NY20240003, Dated April 5, 2024 also applies.

19 Please clarify where are we tying the marked piping on M322A (see below) on the Broadway side of the building?

Marked piping can be omitted, this was carried over from a past FCU location.

Shall there be space allocation within the existing building for CM & Subcontractor field offices?

Rooms on the 41st floor will be made available for contractor field offices. Room 410134 (approximately 308 SF) and Room 410135 (approximately 313 SF). Additionally, the extra space within the 42nd floor generator room may be used for material storage.

Will there be an opportunity for a further walk-thru? If "yes", please confirm a date/time with sufficient notice to obtain security clearance for the FBI space. Refer to RFI #15 Response.

Given the anticipated durations for equipment lead times on this project, are GSA open to a delayed release of the project NTP, such that early release of same can take place without impacting the declared duration of 12 months for the project schedule?

Are GSA open to allowing CWC to submit shop drawings and purchase long lead time equipment immediately after Award and Letter of Intent and/or Contract Execution prior to NTP

The contractual construction phase duration will be extended to 18 Months (540 Calendar Days) to accommodate for longer lead times.

GSA anticipates a 'delayed release' of the Notice to Proceed (NTP) while GC personnel submit for FBI background checks after contract award.

This time can be utilized for submittals and approvals of long lead time items.

23 100% CD Specifications has section 02 82 00 ASBESTOS on the TOC but is missing in the binder. Provide spec section 02 82 00. Refer to RFI #1 Response.

24 Provide recommended Logistics/ Means and Methods to bring New Chiller into the Mechanical Room

This is the responsibility of the bidder to confirm and propose as part of the requested logistics plan.

The BOD is a standard GSPA-14 tangential air separator. The specs clearly call for a Air/ Dirt Coalescing Separator, this style of air separator costs over three times as much as the standard. Confirm style of air separator.

Style of air separator is coalescing type.

26 Please provide as-builts for this building, including roof structural and mechanical drawings, old rigging/derrick drawings, etc.

Drawings will be provided for roof structural and mechanical. Refer to Exhibits #1-5 that will be included with the RFP amendment.

27 Is CPX or 18 Pulse required for variable frequency controls in this building to meet 5% THD?

Drives shall be of the type to meet the harmonic performance as noted in specification particularly the following sections:

1.4 A 2 c

1.7 G

1.7 H

2.3 S. 1.

2.3 S. 3

28 Are Metalaire products acceptable? They are not a listed manufacturer. The contractor shall provide a letter of performance equivalency if the hired contractor proposes a manufacturer not listed in the specifications.

How is the general contractor meant to price the abatement work? There is no defined scope of work. General Note 6 under ASBESTOS GENERAL NOTES on H-001 states "CONTRACTOR IS RESPONSIBLE

FOR VERIFYING QUANTITIES AND LOCATIONS OF ALL ASBESTOS

CONTAINING MATERIALS. FAILURE TO DO SO SHALL NOT RELIEVE

THE CONTRACTOR OF ITS OBLIGATION TO FURNISH ALL LABOR

AND MATERIALS NECESSARY TO PERFORM THE WORK." When does the contractor have the opportunity to verify quantities during the bid process? Are we providing a unit price for a single penetration with a quantity to be confirmed later via equitable adjustment or contract adjustment?

There is no asbestos abatement in the project scope. Note #6 would only apply if any ACM is encountered during the course of the project that needs to be abated. Notes #3 and #4 refer to O&M procedures which are a GSA requirement for performing work in the building. The H-001 notes will be updated to be more clear in this regard.

https://www.sba.gov/sites/default/files/2024-03/FY24_Final_Goals.pdf.

*UPDATED*

There is not adequate information in the bid documents to prepare an abatement price. General Note 5 under ASBESTOS GENERAL NOTES on H-001 states "COMPLETE ABATEMENT OF ASBESTOS

CONTAINING MATERIALS IS NOT INCLUDED IN THIS PROJECT. THE

SCOPE OF WORK IS LIMITED TO CLEANUP OR ABATEMENT OF

ACM ONLY AS NECESSARY TO FACILITATE THE PROJECT." General Note 3 under LEAD GENERAL NOTES on H-001 states "LEAD

ABATEMENT IS NOT INCLUDED IN THIS PROJECT. DISTURBANCE

OF LEAD-BASED PAINT SHALL BE LIMITED TO ONLY THAT WHICH IS

NECESSARY TO FACILITATE THE FIRE ALARM UPGRADE PROJECT."

- Who determines what is "as necessary" at the time of bid to determine the scope of work for pricing?

- Please define the work that will impact the cited asbestos or lead-based paint in each work area.

- Please define the cited components that will be impacted by the scope of work in each work area on each floor.

- What is the basis of work for the Internal Government Estimate for this portion of the bid?

Asbestos abatement is not in the project scope at this time. Notes #3 and #4 refer to O&M procedures which are a GSA requirement for performing work in the building. Bidders will need to account for the O&M procedures. The H-001 notes will be updated to be more clear in this regard. The locations that were within the scope of the hazardous materials surveys where O&M procedures are needed to enter the ceiling to perform work will be identifeid in the other H-series drawings for further clarity. Typo regarding fire alarm project will be corrected. The location of components containing lead-based paint are identified on the drawings. Contractor will need to determine the extent of lead-based paint disturbance, if any, that is necessary to perform work on the project. Level of disturbance depends on the means and methods for performing the construction work. Internal Government Estimate figures cannot be shared.

Drawing H-001 references a LIMITED HAZARDOUS MATERIALS SURVEY REPORT, DATED AUGUST 11, 2023 and REVISED FEBRUARY 14, 2024. We do not see this document included with the bid Exhibits. Please share this document.

Refer to Hazardous Materials Survey Report provided.

32 Contract Specifications are missing spec section 028200 ASBESTOS as listed in the Specifications Table of Contents. Please share this document. Refer to the updated specifications.

Sheets H-120 - H-129 note the following, “Work in plenum other than visual assessment requires asbestos O&M procedures including negative pressure, tent, and proper PPE due to presence of residual ACM fireproofing debris. Any debris generated must be HEPA vacuumed and treated as asbestos-contaminated debris.”

- Please define the areas in which plenum work, other than visual inspections, will be performed.

- Please define what work will be performed within the plenum spaces.

- How are the plenum spaces accessed?

- If it is known and assumed that ACM debris would be found on horizontal surfaces within the plenum space, will removing the ceiling materials (plaster, sheetrock, ceiling tiles, etc.) be considered disturbing the potential ACM?

- Please quantify the amounts of asbestos that can be anticipated in each work area, on each floor within this project.

Refer to MEP and Architectural drawings to determine what work is necessary within the ceiling spaces. The locations that were within the scope of the hazardous materials surveys where O&M procedures are needed to enter the ceiling to perform work and where making penetrations in CMU walls will be identified in the revised H-series drawings for further clarity. O&M procedures referenced in H-001 notes #3 and #4 are a GSA requirement for working in the building due to the known presence of residual ACM debris from prior abatements. The work is not considered abatement by definition. The amount of material anticipated within each portion of the ceiling cannot be estimated. There is known scattered debris of ACM fireproofing that was removed during prior abatements in ceilings and inside CMU walls.

The Asbestos General Notes call for Asbestos Operations & Maintenance methods.

- As this contract does not require full abatement, do you require the contractor to have an asbestos firm license and for the workers to have O&M asbestos licenses?

- If the contractor/workers do not have asbestos O&M licenses, could a licensed Asbestos Project Designer write the O&M scope of work and oversee the scope of work for the contractor/workers to perform?

- If the contractor/workers do not have asbestos O&M licenses, could a licensed Asbestos Management Planner write the O&M scope of work and oversee the scope of work for the contractor/workers to perform?

- If an O&M scope of work can be created, on behalf of the contractor/workers, by an Asbestos Project Designer or an Asbestos Management Planner, are there any specifications that would be required to be within the scope?

The level of training and personal protective equipment required for the contractors performing work is based on O&M. Operations and Maintenance [O&M] training is a 16-hour course developed by EPA -refer to the OSHA Asbestos Standard for the Construction Industry guidelines, OSHA 29 CFR 1926.1101, and EPA 40 CFR 763.92 for more details on compliance and training requirements. Note that O&M work also requires proper respirator and other PPE use in addition to asbestos work practices. Licensed abatement contractors/workers is not a requirement here, however, may be used as an alternative if O&M level trained workers are not available. This should be detailed in the contractor's work plan. A Management Planner would likely not be able to write a scope/work plan - recommend consulting a Project Designer if needed. The workers still need O&M training - oversight of untrained workers by another asbestos professional is not supported.

The Lead-Based Paint General Notes call for Lead-Safe work practices to be performed.

- As this contract does not require full abatement, do you require the contractor to have an EPA Renovation, Repair, and Painting (RRP) Lead-Based Paint license?

- If the contractor does not have an EPA RRP license, could a licensed EPA Lead Risk Assessor create the Lead-Safe plan and oversee the scope of work for the contractor/workers to perform?

- If the Lead-Safe plan is created by an EPA Risk Assessor, are there any specifications that would be required to be within the scope of work?

GSA will require all workers to have training in accordance with EPA 40 CFR 745.226. Refer to revised specifications 028300 1.9.A. for requirements. All workers must be properly trained - not just the supervisor. Any onsite training provisions for workers is not supported by

GSA.

Is clearance testing a required component of this project?

- If so, will third-party asbestos air sampling and lead dust wipes be provided for this project?

Clearance testing is a requirement. The 3rd party monitoring will be provided via the CMa contract, separately, to include lead wipe sampling and air sampling where required.

What’s the round pipe that feeds by the windows on M-322A, what’s that connecting to and is that at what pressure on water column? (WG.) Is there any work involved on this ductwork?

All existing duct work, etc, are indicated in the lighter line type denoted as ‘Existing’ within our symbols list. These ducts are existing and serve the perimeter. The drawing does indicated new work in these areas

38 Does TAB get performed on the whole floor or only the new work shown on M-322A.

Pre-con air readings are called out to be perform PRIOR to start of demo/construction. On the 22nd floor, this applies to all areas served by the existing overhead air system. Upon completion of the new construction all existing VAV box, Max, Min setpoints to be set per the drawing. Also, water and air testing and balancing to be performed on all new equipment within the project Also refer to the Testing and Balancing specification.

39 What are the acoustical requirements for this project? Do they have same rules as for other federal buildings, e.g. no fiberglass liner?

Acoustic requirements include providing vibration isolation as outlined in the schedules and vibration isolation specifications. Equipment noise levels should not exceed those of scheduled equipment

40 Will there be restraints on noise (i.e. drilling) and shutdowns?

Disruptive work [noisy, odorous, hazardous, etc] that will take place in or adjacent to tenant space [generally floors 20-41] is required to take place after hours. Shutdowns [chilled water, electrical, fire alarm, sprinkler, etc] will need to take place after hours and coordinated with GSA and FBI two weeks in advance.

41 Are equivalent spec manufacturers (Made in USA) acceptable? Any substitutions to the specifications must be submitted and approved.

Will a Design Phase COBie file that contains the same information found on the design drawings be provided by the design engineers once the project is awarded?

A COBie file will be provided after contract award.

43 Is there any priority SOW that needs to be considered for phasing?

The contractor shall follow phasing requirements necessary to maintain chilled water supply to the FBI (except where shutdowns are necessary) and 22nd Floor Optional work phasing. A full phasing plan will still need to be provided by contractors for approval by the Government.

44 Is there occupants on floor 22? The 22nd Floor is occupied.

45 Confirm if all work can be performed during working hours or if weekend/night shifts are to be considered in pricing.

Refer to RFI #40 Response. After hours work can be performed on weekends.

46 For abatement are permit drawings/approval required by the city? Are they to be performed by the GC?

Per the GSA P100 (1.7.4.1.2 Asbestos Pre-Alteration Assessments), GSA will voluntarily adhere to state and local asbestos regulations, in addition to Federal, including notification requirements. Asbestos abatement is not currently within the project scope; however, should abatement become necessary, filing of ACP-7 and other applicable local regulatory compliance will be required.

47 Who is the building FA contractor? Please provide contact info. Refer to RFI #13 Response.

For Option 2 to perform the mechanical work. Is the intend to remove and reinstall the ceiling tile or the intend is to replace with new ceiling tiles?

SOW is not clear on the drawings.

Remove and reinstall.

49 Is CAD drafted shop drawings acceptable? CAD drafted shop drawings are acceptable.

50 N/A RFI withdrawn.

51 In M-344 please confirm if there is enough space to install ET - 44-1 and WF-44-2 . See pdf "RFI51" for relocation of ET-44-1 and WF-44-2.

52 Confirm location for panels UPF-B22, UPS-22A, UPS-22B. Panel UPF-B22 is located in "Core Elec Closet #6". Panels UPS-22A and UPS-22B are located in Room B-20H.

53 Couple of drawings are missing pipe size and valve tags on new piping on M-322. Please update drawings.

Drawing M-322 only pertains to the closet. Adjacent areas are not in scope. All pipe sizes are indicated . The two smaller pipes, traveling up sheet are 2”. This is shown clearly on drawing M-322A.(same area)

There are existing equipment and utilities where ET 44 , WF 44 and backwash tank are shown, but no work to relocate them. The location on the wall is between S & R and 9 & 10.

See RFI #51 Response.

Theres an existing roof contractor working on site. Will they be providing the necessary roof openings and curbs, or will this contract have the ability to install roof curbs with temporary flashing and the existing roof contractor would come afterwards and replace our temporary with their own materials to maintain roof warranty under one contractor.

The GC who is awarded this contract is responsible for roof openings and following repairs. Refer to A-501 for details. Roof warranty must be maintained.

Spec section 23 07 00 on page 9 there is a table from ASHRAE Standard

90.1 which has been modified to add types(type 1 type 2 type 3). In the same specification under part 2.1 it lists multiple systems, an some subcontractors would like to bid using these systems. We request that the types listed in page 9 of the modified ASHRAE table be removed to restore the table to the original ASHRAE 90.1 format. This will allow for more competition by insulation subcontractors and a better low bid price with same performance being met.

Section 2.1 lists the acceptable Manufacturer’s.

Page 9 lists the insulation TYPES provided by the acceptable manufacturer’s. Please Note: DT in the table denotes insulation of double the thickness. This is also required for condenser water piping that will be located outdoors or subject to freezing temperatures.

In a word search of the Div 23 specifications there are 80 plus refferences to steam piping, the pipe fitters are asking for the specifications to be adjusted to remove any references to systems not on this project. They stated its creating some ambiguity.

New Steam piping is not utilized within this project. Any steam piping relocates would match the existing material, fittings, pressure, temperatures etc

There is a line in the specifications that there is an additional $35,000 witholding if BIM data is not provided upon delivery of the record documents. Does the Contracting Officer have this amount in the contract language between the Government and Contractor? Are there other allowances in the specifications like this?

The specifications are incorporated as part of the contract agreement that is awarded, so we do not aim to duplicate the language elsewhere.

There are no other allowances in the specifications that GSA is aware of.

In spec section 23 00 00 part 1.19 Record Drawings references these same BIM files. How is the delineation of the BIM work divided Existing building backgrounds and BIM, are we getting this model from AE DOR, is the existing model in compliance with the Record Drawing Requirments.

How much time has the Government included in the project schedule allocated for review, SME review, OE review?

The BIM file is in compliance with all GSA BIM modeling standards. 14 Calendar Days is the typical review period for submittals, including any GC updates to the record documents (per Spec 23 00 00 1.19) which must be reviewed prior to approval for any changes or deviations.

Spec Section 23 00 00 -17 part 1.2, please provide all details for all concrete pads, and who is the Seismic Engineer, the spec says as required by the SE, when do we find out when? This is a build contract, is the GSA asking for the contractor to hire an outside engineer?

Refer to Specification Section 23 05 48-13 Seismic Controls for HVAC, issued with the RFI responses

Spec Section 23 00 00 -18 1.20 G. The manufacturers are not providing recommendations or willing to take liability for design of seismic restraints, will the DOR provide details for all anchoring of equipment once equipment submittals are completed?

Refer to Specification Section 23 05 48-13 Seismic Controls for HVAC, issued with the RFI responses

Specifications include mention of backfilling, utility and site work, we don’t see any of this work and reducing the unneccery information of the specification will assure a better quality of project. We ask that specification language that is not applicable to the project be deleted.

Refer to updated specifications.

Throughout the technical specifications we are reading many items but cannot corrolate the items in the specifications with items on the drawings.

Have the technical specifications been coordinated with drawings to ensure that everything shown on the drawings is specified. And that everything in the specifications has been shown on the drawings, if not can it be deleted to prevent ambiguity.

Refer to updated specifications.

Spec Section 23 05 29 Specifications state verticle risers shall not exceede 15 feet, Sheet M-501 show riser clamps on floors 28 and 29 and guides for every 3 floors, would the rest would be floating through the core drill holes the rest. Please clarify between specification and M 501.

The 15 foot criteria is for piping supported as noted within Section 2.7 - Formed Steel Channel and Supports.(smaller piping). Larger pipe risers on M-501 must be supported by Pipe Anchors as noted throughout Specification 23 05 29

Spec Section 23 05 29 -3.1 J The specification states supports shall be approved by the Architect, including providing supplementary steel, if required. Shop drawings are to show point loadings and shall be submitted in advance…. How do we quantify the "if required amount of work" during the bid phase? Please provide all required hangers and details and quantities so a take off can be done during the bid.

All equipment and design intent are listed within the Contract Documents. There are no unknowns.

Spec section 23 05 48.16-2 Part 1.4 A items 1 -9 We certainly will provide shop drawings and all hanger locations based on the design drawings.

Please provide the location of all the isolation hangers in the bid documents so we can do a count for the bid. We will need the GSAs AE team to provide the spring diameters, and mounting details so products can be selected. Is the GSA going to have the contractor design all the support systems for the project or will the GSAs design team be responsible for the hanger design.

Refer to specification sections 23 05 48 16 7 – Vibration Isolation for HVAC Piping, Ducts and Equipment, Section 23-05-29 – Hangers and Supports for HVAC Piping, Ducts and Equipment and all associated reference sections along with the HVAC Plans.

The design includes structural steel work for supporting chillers, piping risers etc. This appears to be all of the structural work required on the project, however the piping hangers and electrical hangers specifications section discusses additional steel as required. Will the structural engineers provide design drawings for all additional steel required for hangers ?

Miscellaneous additional steel support is delegated design by general contractor's engineer.

Spec section 23 05 48.16-2 Part 2.2 N Please provide design details for the Vibration Isolation of all equipment. Shop drawings will need the design engineers to detail what components we need, so that we can then do a take off for the bid.

230548.16-2 Part 2.2N includes the list of required materials for vibration isolation submittals. Vibration isolation shop drawings are the responsibility of the contractor and vendor and are required based on the type of vibration isolation outlined in the specification.

69 Is the NUSIG the only required guidline to follow for seismic? All work shall comply with codes required by the P-100 2021.

Section 23 00 00 -17 Part 1.2 C. Who is the design teams seismic engineer of record? The sentence here "…as required by the Seismic Engineer…" Do the drawings and specifcations provided in this solicitation show all components required for the project so that we can do a bid estimate on quantities and types? The words "as required" is ambiguous and creates uncertainty about materials and labor quantities.

The contractor is responsible for hiring the seismic engineer, for specific seismic control requirements, please refer to Spec Section 21 05 48.13(Fire Suppression), 22 05 48.13(Plumbing), and 26 05 48.13(Electrical). Spec Section 23 05 48.13(HVAC) will be included in the updated specifications.

71 Specification 23 09 00 - 15 Unit Prices are being requested, where on the GSA bid sheet do we put this information? Unit pricing is not applicable and will be removed.

72 Section 23 21 13 -9 for copper tube in 2.3 table, fittings are not identified. Copper fittings for pipe sizes 3” and under use Wrought copper -soldered or brazed below 375 psi (25.8 bar)

73 Would schedule 10 be acceptable for the cooling tower mains? Schedule 10 piping is Not Acceptable

There are many instances of UNIT PRICES throughout the specifications, Will GSA issue a complete bid sheet compiling all the unit prices in the specifications book?

Unit pricing is not applicable and will be removed.

For all structural steel work required, ghas the structural engineer performed all the design so we as installers can install the structural steel shown on the drawings? Or is the contractor to hier a separate structural engineer to perform a design?

Contractor to provide structural steel as noted in the structural drawings.

Refer to structural steel general notes, note 3 on S-001 for connection design requirements. Miscellaneous metals such as mechanical hangers and the like are delegated design by the contractor's engineer.

76 Division 5 specifications has multiple references to "…as required…" please specifiy where things are required and remove ambiguity.

The structural scope is indicated on the structural drawings.

Specifications and drawings are complimentary. "As required" to be interpreted to be "as required by applicable codes and structural drawings or as necessary based on contractor's means and methods".

This phrase to be interpreted in the context of the section where written.

Part 1.4 Submittals B 1. says for the shop drawings to " ... include analysis data signed and sealed by the qualified professional engineer…" Does the GSA want the contractor to hire an additional structrural engineer for this project or is the design team going to perform the design analysis?

Where applicable, shop drawings must include analysis signed and sealed by a qualified PE hired by the contractor.

Spec section 051200 1.4 A states to have contractor provide details and connections including comprehensive analysis by a structural engineer.

Does GSA want the contractor to hire an additional structural engineer to perform design or is the AE team going to provide the design analysis?

Contractor shall hire a structural engineer to design connections as specified in spec section 051200 1.4A and structural steel general note 3 on S-001.

Does the GSA have a complete and accurate set of structural drawings of the building. Please provide full set of structural drawings during the bid phase so that our proposal can be based on the existing structural steel.

Or at least the best record of drawings known.

Refer to Exhibits #1-5 to be included with the RFP amendment.

Will the GSA provide a complete set of amended drawings and specifcations after the bid that can be reconciled for all RFIs during the bid phase?

All updates necessary to satisfy RFI responses will be included via an RFP amendment.

Does GSA want the contractor to hire an seismic engineer to perform design or is the AE team going to provide the design analysis for all seismic requirments?

The contractor is responsible for hiring the seismic engineer to work on the design associated with all systems for this project.

The existing building system can not be measured as specified in the TAB section due to the fact that not all equipment in the existing system is operational. The Pre TAB report requirments should be amended based on the existing conditions of the plant and infrastructure.

This pre-demo TAB is meant to measure the flow at the terminal equipment on each respective floor served to ensure a benchmark measurement is taken and documented ahead of installing the new water cooled plant. Once the new plant is online, a TAB effort will be required to verify the same flow is being maintained to all of the connected terminal equipment, as measured by the pre-demo TAB report.

The pre testing and measurments shown in the building automation specifcations cannot be performed as many of the pieces of equipment are not in service. We suggest to just have the new system tested and commissioned and remove requirments for pre testing.

23 00 00 – 23 / 1.35 A Its unclear what tests in the factory are required, there should be a detailed list so it can be priced accordingly

23 00 00 – 1 , 1.1, B, 3.

States primary and secondary, doesn’t match drawings, and R134a Refrigerant Note! The EPA Enviromental Protection Agency announced the phase out of R134a in 2015. Which seems to indicate this spec was copied from another project.

23 05 93 - 11.

3.7, A , Balancing Air Systems It is unknown why we are pre-balancing Air systems. Is the entire 22nd floor to be tested. so it can be priced accordingly please ask the GSA SME to find out what is being pre tested.

3.8, A , Balancing Hydronic Systems What is the flow in GPM for each floor? Is that to be balanced?

The question also is for clarification that there is not a pre test for the existing chilled water plant as the existing plant heat exchangers, and some of the other equipment is not functioning. It is known there are problems with the existing plant we are not to pretest. How should the controls contractor price the Pre Testing of existing building air and water systems?

HVAC Equipment requiring factory testing are as follows:

A.Chillers The chillers shall be factory tested in accordance with Section 236416, Part-3 Execution, 3.3 Factory Testing Factory testing must be virtual. Manufacturer shall record full testing and provide test result documentation to the owner. As noted within this section, ‘the chiller manufacturer shall operate each machine for as long as necessary to perform all tests required under ARI Standard 550-specified conditions to verify machine efficiency and the ability to provide the scheduled output’ Note inspection, startup and Field Tests are required per Section 236416

B. Cooling Towers Factory Testing not required. Tower must be CTI Certified As noted within the specification Section 236500, Section 3.4 Field Test, : ‘Within one (1) year after completion of the installation, a CTI certified cooling tower performance test , in accordance with CTI Acceptance Test Code ATC-105, shall be performed by an independent third party in the Owner's presence…’

C. Pumps Factory testing per section 232123.2.2.F of the specifications.

Manufacturer to provide all data obtained during testing. Inspection, startup, adjustment, and balancing is required per the specification.

D. Fan Coil Units Fan coil units do not require factory testing unless required by GSA. If factory testing is required by GSA follow requirements noted in specification section 238219 1.6

See latest spec section 23 00 00 – 1, 1.1, B, 3.

23 05 93 - 11.

3.7, A , Balancing Air Systems No pre-balancing required for 22nd floor work.

3.8, A , Balancing Hydronic Systems Contractor shall take pre-demo TAB flow/GPM measurements at all riser branch take-offs and all tenant water-side equipment. Once the new plant is online, a TAB effort will be required to verify the same flow is being maintained to all of the connected terminal equipment.

There are no pre-balancing measurements required of the existing water-cooled plant, as this plant is currently not in use and will be demolished.

The architectural demo drawing, AD-122, calls for removing the GWB partition and repairing the CMU wall to match the adjacent finishes during the 6” chilled water riser work. However, we didn’t see the GWB partition on the 22nd floor during the walkthrough. Please clarify which floors require the replacement of the GWB partition during the replacement of 6” Chilled water risers

Refer to RFI #04 Response.

The cover sheet shows the architectural demo drawings AD-123 & AD-128, but they are missing from the drawing package. Please provide the missing drawings.

Refer to RFI #04 Response.

86 Is there acoustic ceiling tile or drop ceiling in the basement where we have work for an electrical feeder bus duct?

No. There is no acoustic ceiling tile or drop ceiling in scope of work area in the basement.

The architectural demo drawing, AS-142, calls for the wall opening for the emergency generator and refers to M-145 for details. However, the M-145 drawing is missing from the drawing packages. Please clarify and provide the dimensions of the wall opening.

Refer to RFI #04 Response.

No information is provided on the field office and staging area. Please clarify if GSA will provide the space for the field office for the contractor to use inside the building.

Refer to RFI #17 Response.

89 The plumbing drawing, P-110, shows the new drain and vent connection to the existing risers. Please provide the drain and vent pipe size.

3" sanitary connection and 2" vent connection shall be provided as indicated on contract documents.

Response to 23 00 00 – 23 / 1.35 A question:

Response to 23 00 00 – 1 , 1.1, B, 3 question:

The fire protection demolition and new construction drawings show the fire sprinkler branch piping being demolished and connected on every floor to the existing main. Please provide the pipe size for all fire sprinkler work.

Sprinkler branch sizes will range from 1" to 1-1/2".

The plumbing demolition drawings, P-011, P-012, and P-013, show multiple plumbing piping being demolished on every floor. The pipe sizes are not provided. Please provide the pipe size for the new pipe for installation.

Please see updated demolition drawings P-011, P-012 and P-013 with pipe sizes provided.

92 What is the MWBE % requirement for this project?

Refer to the solicitation IV.D. FAR 52.222-23 Notice of Requirement for Affirmative Action to Ensure Equal Employment Opportunity for Construction for the goals of this solicitation.

A few phasing works are involved during the chilled water piping replacement, which requires shutting down the cooling system. What is the time limit for this shutdown? During the walk-thru, we were told that the building operates 24/7.

The FBI chilled water supply can typically be shutdown over a weekend (beginning after hours Friday through start of normal working hours Monday). Shutdowns must be coordinated by the contractor with sufficient notice to the Government (two weeks).

Per the contract documents, this job will be awarded in November 2024.

After the submittal of drawings, the approval process, and the lead time for the equipment, it will take 5-6 months to deliver the equipment on-site.

Will there be any seasonal work to replace the cooling system? Please clarify if we need to provide temporary cooling during the cooling tower and chilled water equipment replacement.

No temporary cooling is required as the FBI will be supported by the air-cooled chiller plant.

Drawing EL-244 44th Floor reflected ceiling plan shows light fixtures to be circuited by ex. Panel LB-B3L and Ex. Panel ELP-A3L, please advise us the location of these panels on the drawings?

Attached panel schedules show highlighted equipment that is missing from the electrical drawings but is shown on the schedule, we would like to know the locations of these units?

FCU units for E-702 are shown on the floor plan E-322 and mechanical drawings. Circuits numbers can be updated. Other existing motors on E-701 are located on 44th floor adjacent to existing chillers.

97 Please clarify the Small Business % targets for this project. Is there a specific percentage a requirement for this project or is it a goal?

There's no specific requirement for subcontracting with small business goals, but we strive towards agency goals provided in this link:

We hope our prime contractors will do their best to set reasonably high, but realistic goals that reflect the current state of their industry and their ability to network, hire subcontractors and strive to maximize their small business participation. Please follow the instructions for Factor 5 to ensure you include the proper narrative information that supports how you will maximize small business participation. However, please note for your subcontracting form, the only mandatory requirement relates to the contract agreement's section III. Terms and Conditions, III.A. Contractor Responsibilities, GSAR 552.236-71, Contractor Responsibilities is located in Section IV.A. of this Agreement and is supplemented as follows: (1) For the purposes of FAR 52.236-1, Performance of Work by the Contractor, the Contractor shall perform at least twelve (12%) percent of the construction work.

98 Who is the building BMS vendor? The building BMS vendor is Siemens.

99 Is the new BMS a stand alone system or should it be tied in to the existing

BMS?

Refer to 230900. Updates to the BMS will be an extension of the existing system.

100 Who is the building Fire Alarm vendor? Refer to RFI #13 Response.

101 Is there a building roofer/preferred roofing contractor?

There is no building roofer or preferred roofing contractor. Contractors shall follow roof penetration details and requirements to maintain roofing warranty.

102 What is the anticipated construction start date?

The anticipated construction start date is early March 2025. This is subject to change pending how quickly the awarded contractor can complete all of the necessary tasks (mainly the security clearances) before construction can begin.

What specific requirements do we need to consider and include in our bid for the Megaproject Program? Are subcontractors required to hire from a specific pool of applicants?

This project is not listed as part of the Mega Construction Project Program at this time and therefore this section of the solicitation is not applicable.

104 Is signage FF&E or should it be included in this bid? Signage shall be included in the bid.

Please clarify the abatement scope of work on the roof as it is not clear on H-146. Note on H-146 states "Roof cores for hazardous materials assessment were not performed . Roof is being evaluated and replaced under separate contract. Owner is to verify that roof replacement is complete and hazardous materials are not present." However, there is a separate line item in the Offeror form for "Hazardous Materials Removal Work." Will the roof be replaced as new under a separate contract prior to this project, or will testing and/or abatement be required under this projects scope before disturbance.

Roof penetrations on the FOB side are not anticipated under this contract. However the note will remain in the event a penetration does need to occur, before which testing and potential abatement will need to be done.

Based on the site walk and 3D Matterport Scans, the existing roof is in need of replacement. Is roof replacement in our scope of work or will the roof be replaced before we begin this project?

Roof replacement is not part of the scope for this contract. Refer to roof plans and A-501 for roof penetration details associated with this contract's scope.

ELP-A3L is located in Elec Closet 4491 next to Stair G on 44th floor.

Panel LP-B3L is located in Annex Elec 'B' Closet (44-125) near Stair E.

https://www.sba.gov/sites/default/files/2024-03/FY24_Final_Goals.pdf.

https://public.tableau.com/app/profile/cody.cummings/viz/OFCCPDesign atedMegaprojects/MegaprojectTabulation

Note 6 on H-001 mentions the following related project document

"LIMITED HAZARDOUS MATERIALS SURVEY REPORT, DATED

AUGUST 11, 2023 and REVISED FEBRUARY 14, 2024." Please provide this document.

Refer to RFI #31 response.

Riser diagram on E-400 shows ATS-10, 11 and 12 being fed from the paralleling switchgear expansion that is called for in Option 1. Please clarify if the furnish and install of these (3) ATS's should be apart of the base scope of work, or if they should be included in Option 1. If they are in the base scope, should the expansion of the paralleling switchgear also be included in the base scope or will the ATS's be fed from the existing section of the switchgear?

ATS-10, 11, and 12 and associated expansion of paralleling switchgear to accommodate these are part of base scope. Option 1 is for addition of Generator No.3. Refer to drawing E-650.

109 Which breakers are associated with DEDUCT Option 3 per the design options on drawing E001?

The "Spare" circuit breakers of the paralleling switchgear (EMDS-44) are part of Option 3.

Please provide the manufacturer information for new circuit breakers to match existing spec in service distribution switchboard ‘C’ as shown on drawing E-400.

Refer to RFI #109 response: The existing drawout circuit breaker was manufactured by Westinghouse.

Note 1 on drawing E-650 says "spaced" cubicles shall be fully bussed for future use. Which breakers in existing paralleling switchboard EMDS-44 is this note applicable to?

If Option 3 is exercised, then the 'spare' circuit breakers at the paralleling switchgear shall become 'spaces' with full bussing as noted.

112 Is the 600A Busduct switch that is shown feeding ATS-22-1 on E-400 new or existing? 600A busduct take-off shall be new.

Existing service switchboards A and H both show bolded 1600A circuit breakers on E-400 riser diagram. Are these new circuit breakers that need to be added to the boards?

Refer to RFI #7 Response.

114 Please provide a panel schedule for UP-BMS-44. Refer to RFI #11 Response.

115 What is the purpose of the 15kVA transformer downstream of DP-44 EM?

DP-44 EM is a 120/208V panel as is the equipment downstream.

At the walkthrough no photos were permitted on the FBI floors (20-29), however it was stated that there would be photos of the space that would be distributed. This is important as there is existing light fixtures, fire alarm devices and additional ceiling mounted devices that will need to be removed to allow access to the ceiling above the grid. We aren't able to quantify the amount of fixtures as they aren't shown on the drawings. If no pictures are going to be provided, please provide a quantity that can be carried in our pricing.

Photos will be provided as part of the RFP amendment associated with the RFI responses.

Plumbing drawings call out for the removal of the mop sinks. The waste piping for a mop sink is typically on the floor below but drawing P-401 shows it above the floor. Please clarify if the piping is above the floor. If it it above, can we utilize that connection for the new funnel drain?

Existing mop sinks are free standing, not floor mounted. Connection point is located on the floor the sink serves not the floor below.

118 The new plumbing piping that needs to be offset on P-301 shows no sizes. Please advise.

Please see updated construction drawings P-301, P-302 and P-303 with pipes sizes provided.

Please provide the sizes and material type of the existing sanitary, vent and water risers in the shaft? Plumbing plans indicate existing risers to be tied in to but they do not clarify sizing and piping material.

All existing domestic water risers (cold water, hot water, hot water circulation) are 2". Existing sanitary riser is 4" and existing vent riser is 5". Sanitary and vent piping is cast iron. Domestic Water piping is is Tyle L Copper per the P100 Standards.

120 Drawings P-301 through P-303 show the rerouting of piping on floors 20 -41, are there already connection points on the risers to connect to?

Existing piping connects to existing risers located within shaft. Upon cutting and capping of the pipe there were be an connection point to route to, if new chilled water riser impacts existing capped outlet, a new connection point will be required.

Period of Performance is 365 days, but drawings call for 2500 A bus duct to be installed. Bus duct lead time is up to 70 weeks currently depending on manufacturer with a lengthy field install and verification time for any custom order pieces. Please clarify period of performance to account for the delivery lead time of bus duct.

Refer to RFI #22 Response.

Period of Performance is 240 days for Option 1, the generator installation option. Generator lead time is 70 weeks and does not account for the partial breaking down in order to rig into the space. Please clarify period of performance for Option 1 to account for the delivery lead time of the generator.

Option 01 duration is extended to 18 Months (540 Calendar Days).

Please note that the base contract and all options are considered to have their own, independent 'Notices to Proceed' and their own durations.

Option 2 is in regards to supplemental cooling on floors 22 - 29. It was mentioned during the site walk that there would be no movement of any of the tenants during this phase of the construction.