DCSC-26-RFP-068 Building A Cooling System Upgrade Amendment 4 GMapproved.pdf

Administrative Services Division Phone: 202.879.4264 Office of the Administrative Officer Fax: 202.879.7575

E-mail: Geoffrey.mack@dccsystem.gov

DISTRICT OF COLUMBIA COURTS

Administrative Services Division Office: Cadwalader Wickersham & Taft

700 Sixth Street NW, 12th Floor Washington, DC 20001

Mailing Address: 500 Indiana Avenue NW

Washington, DC 20001-2131

AMENDMENT NO. 4

TO: ALL PROSPECTIVE BIDDERS

AMENDMENT

ISSUE DATE: June 01, 2026

SUBJECT: Solicitation No. DCSC-26-RFP-068

Building A Cooling System Upgrade

O

PROPOSAL

SUBMISSION

DATE: Tuesday, June 09, 2026, by 3:00 PM

Eastern Standard Time

1. Response to Question submitted - Tuesday, May 26, 2026

Solicitation – Scheduled.

Proposal Due Date: All proposals are due Tuesday, June 09, 2026, no later than 3:00 PM

Proposal Drop Off Location: DC Courts Building B

510 4th Street, NW 3rd FL Bid- Room

Washington DC. 20002

ALL OTHER TERMS AND CONDITIONS REMAIN UNCHANGED

One (1) copy of this amendment is being sent to all prospective Offerors. The prospective Offeror shall sign below and attach a signed copy of this amendment to each proposal to be submitted to the Courts in response to the subject solicitation or otherwise acknowledge this amendment with the

Herbert Rouson, Jr.,J.D.

Executive Officer

Dana A. Friend

Deputy Executive Officer

Geoffrey A. Mack Administrative Officer signed offer as stated in the original solicitation documents. Proposals shall be delivered in accordance with the instructions provided in the original solicitation documents.

Geoffrey A. Mack Geoffrey Mack

Contracting Officer

Acknowledgment of this Amendment, together with the Offeror’s proposal, must be received by the District of Columbia Courts as stated in the solicitation no later than the closing date and time specified above for the receipt of proposals.

Failure by the Offeror to properly acknowledge receipt of this Amendment Number #04 may be cause for rejection of the proposal submitted by the Offeror in response to the subject solicitation.

This Amendment Number #04 is acknowledged and is considered a part of the proposal for

Solicitation Number DCSC-26-RFP-068 Building B Cooling Upgrade.

Signature of Authorized Representative Date

Name of Authorized Representative

Title of Authorized Representative

Name of Offeror

Please remember to check the DC Courts Website daily for posting amendments, and updates.

https://www.dccourts.gov/dc-courts/solicitations https://www.dccourts.gov/dc-courts/solicitations

From:

Kenneth L. Evans

Q & A

Round:

Project: DCSC-26-RFP-068 Building A Cooling System Upgrade Date: June 1, 2026

Email: Kenneth.Evans@dccsystem.gov Pages: 9

1 Question:

Referencing drawing M5.2 note M225, please provide contact info for current water treatment contractor.

Answer: Boland Trane - Greg Sergent

2 Question: Referencing the RFP document note B.4.2, please clarify the tonnage capacity required for the temporary chiller. Please provide the location of the temp chiller and generator.

Answer:

230 tons. Chiller will be on the east side of the building (next to Police Memorial). Generator is not needed.

3 Question: Referring to the RFP note F.5.2 states weekday work hours as 6:00 PM - 6:00 AM. Please clarify that these night hours of work will be required.

Answer: Confirmed.

4 Question: Referring to the RFP note I.23.1, please clarify the cost of the proposed liquidated damages.

Answer: 1000 Per Calendar Day

5 Question:

Referencing spec section 230130.51 and 230130.52 HVAC air distribution system cleaning, is this required being that this is a chiller and tower replacement job? If so, please provide drawings showing all air handler and existing ductwork.

Answer:

The intent of Spec Sections 23 01 30.51 and 23 01 30.52 is to define cleaning procedures where HVAC components are affected by construction. For this project, which is limited to chiller and cooling tower replacement, this is not intended to require cleaning of the entire air distribution system.

The requirement applies only to new work or existing ductwork, grilles, exposed coils, and air openings for cooling tower/chiller room that are impacted by debris or construction activities.

6 Question: Was there an amendment #2 issued?

Answer: No.

7 Question: Is there an upcoming roofing project planned and if so, when will it take place?

Answer: Yes, a roofing project is planned for Bld A. The anticipated award is Spring 2027.

8 Question: Please provide a copy of the pre-bid sign in sheet.

Answer: See attachment to this Amendment #4.

9 Question: Please confirm this project is to be performed during off-hours only per RFP Section F5.1.

Answer: Confirmed.

10 Question:

RFP section H.5.1 lists a Quality Control Manager.

a. Please confirm the Superintendent is permitted to also serve as SSHO.

b. Please clarify whether the Superintendent is permitted to also serve as the Quality Control Manager.

c. If the Superintendent may not serve as the Quality Control Manager, please clarify the required on-site presence and availability requirements for the Quality Control Manager.

mailto:Kenneth.Evans@dccsystem.gov

Answer:

a. H.5.1 (2) Superintendent / Safety Manager (dual hat permissible) - Yes

b. The Quality Manager position is not allowed to be dual hat.

c. I would say 50% required on-site presence specifically during the initial phases of work and required attendance in pre-installation meetings and OAC meetings. QC Manager should also review submittals.

11 Question: RFP section I.23 does not specify value of liquidated damages. Please provide value of liquidated damages per calendar day.

Answer: 1,000.00 per calendar day

12 Question:

Specification 01 10 00 Section 1.6 states Owner-furnished equipment is TBD. Please confirm any Owner-furnished equipment not specifically identified in the Contract Documents as installed by the Contractor will either be installed by the Owner or addressed via change order.

Answer: Confirmed.

13 Question: Specification 01 10 00 1.5.B.1 states “The courts will remove all furniture to be salvaged prior to start of construction.” Please confirm.

Answer: Confirmed.

14 Question:

Specification 01 10 00 1.5.C states the contractor is responsible for life safety signage and electrical coordination for furniture. It also states the owner is responsible for signage and furniture installation.

Please confirm.

Answer: Confirmed. Owner is responsible for non- safety signage and furniture installation when not specifically identified in the contract documents. GC is responsible for code-required signage.

15 Question:

Specification 01 10 00 indicates cameras are not permitted without written permission from the Owner.

However, specification 01 32 33 requires photographic documentation. Please clarify procedures and restrictions associated with project documentation photographs required for Procore reporting, progress documentation, inspections, and closeout documentation.

Answer: Upon award to the successful vendor, the vendor should provide us with the COTR with the name of the person (s) taking photos, the location and timeframe and Courts will provide authorization.

16 Question:

Please clarify the maximum allowable chilled water, condenser water, and electrical outage durations associated with this project.

a. Please also confirm whether phased shutdowns are required and identify any blackout periods during which outages will not be permitted due to court operations.

Answer: It is assumed that there may be phased shutdowns that must be prior approved by the COTR. Blackout periods would typically be normal working hours Monday - Sunday 7AM - 5:30PM.

17 Question:

Please clarify the operational requirements associated with the temporary cooling allowance, including:

a. Areas required to remain conditioned during shutdown.

b. Required indoor environmental conditions during shutdown periods

c. Whether temporary cooling must support full building load or critical areas only

d. Whether temporary power distribution, fuel management, monitoring, controls integration, and staffing associated with temporary cooling are included within Contractor scope

e. Any noise restrictions applicable to temporary cooling equipment

Answer: A- Entire building. B- Yes, w/n the SOW areas. C- Full building load. D- Power and temp chiller provided outside SOW. E- No, unit will be outside.

18 Question:

Please clarify all Contractor-required permits, inspections, and third-party approvals associated with this project, including but not limited to:

a. DDOT permits

b. Street closure permits

c. Crane permits

d. Electrical inspections

e. Fire alarm inspections

f. Environmental permits

g. Any required utility company coordination or approvals

Answer: Yes, these are the minimum but not limited to as per the contract.

19 Question:

Please clarify approved crane staging, rigging, and material delivery logistics for this project, including:

a. Approved crane setup locations

b. Maximum allowable crane sizes and axle load

c. Street/Parking closure limitations

d. Permitted delivery hours

e. Restrictions associated with adjacent occupied facilities and roadways

Answer:

Crane staging and rigging is dependent upon numerous factors which will be evaluated upon receipt of the Contractors' Site Logistics and Lift Plans. Access, closures, and impacts to property that is not controlled by DC Courts is subject to coordination with the appropriate AHJ. Include proposed parking closures on DC Courts property on Site Logistics Plan. Delivery of materials depends upon the size and complexity of what is being delivered, as well as time of delivery. Scheduling of deliveries will be in coordination with the Owner.

20 Question:

Drawing S1.2, Keynote 3 states that the existing condenser water piping opening locations and structural assumptions are based on 2003 Building B drawings due to limited available documentation for Building A.

Please confirm whether the Contractor should base pricing on the opening locations and structural conditions indicated in the Contract Documents. In the event field conditions materially differ from those indicated and additional structural modifications are required beyond the documented scope, please clarify whether such work will be addressed as a change order.

Answer: Such work will be addressed as a change in order.

21 Question:

Drawing S1.2, Keynote 11 states that existing beams are assumed to require reinforcement and instructs the Contractor to perform NDE scanning and selective probes to confirm existing framing conditions.

Please clarify whether structural reinforcement quantities beyond those indicated in the Contract Documents will be handled by change order if existing conditions materially differ from the assumptions shown on the drawings.

Answer: Such work will be addressed as a change order

22 Question:

Drawing S1.3, Keynote 5 states that the condition of existing cooling tower support beams cannot be fully assessed until demolition and removal of coatings occur. Please clarify whether steel reinforcing or repairs required due to unforeseen deterioration, corrosion, or section loss beyond the assumptions shown in the Contract Documents will be addressed via change order.

Answer: Such work will be addressed as a change order

23 Question:

Please provide any additional available existing-condition documentation not included in the bid set, including:

a. Existing as-built drawings

b. Existing TAB reports

c. Existing controls/BAS points lists

d. Existing sequence of operations

e. Existing electrical load studies

f. Existing short circuit and coordination studies

g. Existing hazardous material surveys/reports

Answer: A- 2005 MEP drawling’s-Yes B- No C- Yes D- Yes, Web-Control Logic. E, F, and G-No.

24 Question: Please clarify whether controls work must be performed by a proprietary or Owner-authorized controls vendor and identify any required manufacturer certifications or integration restrictions.

Answer:

Confirmed. Controls work must be coordinated and performed by Alberio, the Owner's authorized controls vendor. Manufacturer needs to provide a full integrated point list with addresses for engineering and Owner review. It is preferred to supply BACnet protocol over IP (MSTP is acceptable as well), but Modbus can be used if this is the only option. If equipment does not comply with an open protocol, the manufacturer will need to provide a gateway that will convert the priority software to an open protocol.

25 Question:

Please clarify the intended phasing and sequencing requirements for the project, including:

a. Required order of demolition and replacement activities

b. Whether partial system operation must remain active during construction

c. Required startup and commissioning milestones

d. Seasonal operational constraints associated with cooling system shutdowns

Answer:

A temporary chiller and pumping package shall be provided to maintain full building cooling throughout construction. The contractor's phasing plan and temporary outage sequence shall address the following:

a. Order of demolition and replacement activities:

The temporary chiller and pumping package shall be installed and tied into the existing chilled water piping mains before any demolition of existing equipment begins. Demolition of the existing chillers and associated pumping equipment shall not commence until the temporary system has been commissioned and is fully serving the building. New permanent equipment shall then be installed, started up, and commissioned, after which the temporary package may be removed.

b. Partial system operation during construction

Full building cooling must remain available throughout construction. The phasing plan shall allow connection of the temporary chiller and pumping package into the existing chilled water mains such that the entire building is served by the temporary equipment during the outage period. Once the new permanent chillers, pumps, and associated piping have been installed, the contractor shall perform initial startup and pre-functional testing of the new plant in isolation from the active (temporary) system to verify proper operation prior to changeover. The contractor shall then execute a coordinated cutover system, isolating and disconnecting the temporary package from the chilled water mains and bringing the new permanent plant online to serve the building — scheduled to minimize disruption to building operations (e.g., performed during off-hours or low-load periods). Following cutover, the contractor shall fully commission the new plant under live building load, including controls integration, BAS points verification, sequence-of-operations testing, and trend data review. The temporary chiller and pumping package shall not be removed from the site until the new permanent system has demonstrated [72] hours of continuous successful operation serving the full building load and has received written Owner acceptance. See Contract Documents for additional information.

c. Startup and commissioning milestones:

Commissioning shall proceed in the following sequence: (1) the temporary chiller and pumping package shall be fully installed, tied in, tested, and commissioned prior to any demolition of existing equipment; (2) the existing system shall not be taken out of service until the temporary system has demonstrated [72] hours of continuous successful operation serving the full building load; (3) new chilled water plant, including controls integration, BAS points verification, and trend data review, shall be fully started up and commissioned prior to removal of the temporary package; (4) Owner witness testing and written acceptance is required at each milestone. See Contract Documents for additional information.

d. Seasonal operational constraints:

Chilled water tie-ins and any shutdowns of the building cooling system shall be scheduled with feedback from DC Courts. No chilled water outages are permitted during peak cooling season (e.g., June 1 through September 15) without prior written Owner approval. Any unavoidable in-season shutdown shall be performed overnight / on weekends and coordinated with DC Courts a minimum of [14] business days in advance.

26 Question: Please clarify whether refrigerant recovery, storage, disposal, and associated documentation for existing equipment are fully the responsibility of the Contractor.

Answer: Confirmed

27 Question:

Please clarify whether any additional hazardous material abatement beyond the allowance identified in the RFP is anticipated in association with:

a. Existing piping insulation

b. Cooling tower components

c. Existing roofing materials

d. Existing floor finishes

e. Existing wall materials within mechanical spaces

Answer: At this time, no additional hazardous material abatement is anticipated. However, should there be additional abatement required, coordinate with the COTR.

28 Question:

Please clarify the Contractor’s required temporary weather protection and waterproofing responsibilities associated with roof penetrations, cooling tower replacement activities, and any temporary roof openings during construction.

Answer:

Refer to the Contract Documents and issued Specifications, including but not limited to Division 07 and Division 01 requirements, which establish the Contractor’s responsibility to provide and maintain temporary weather protection, ensure watertight conditions at all roof penetrations, cooling tower replacement work, and temporary openings, and to prevent water intrusion during construction

29 Question:

Please clarify permitted Contractor access routes and material transport methods for basement mechanical room and attic/cooling tower work areas, including use of existing elevators, loading docks, louvers, exterior access points, roof/attic access paths, and the TO14 parking lot access route. Please also identify any associated restrictions related to material staging, rigging, occupied-space protection, delivery timing, or equipment transport.

Answer:

Contractors are permitted to use existing elevators, loading docks, louvers, exterior access points, roof/attic access paths, and the parking lot access route. Considering this project will be constructed after normal working hours, there are minimal limitations- however, it must be coordinated with the COTR.

Additionally, any modification, damage or repairs that occur must be corrected by the Contractor.

30 Question:

Please confirm whether structural delegated design responsibilities are limited to the items specifically identified in the Contract Documents, including cooling tower support framing, connection reinforcing, shoring/bracing, and associated structural attachments.

Answer: Confirmed, including but not limited to the stated SOW. See Contract Documents for additional information.

31 Question: Please clarify whether any temporary removal and replacement of louvers, exterior walls, railings, fencing, or other building components will be required to facilitate equipment removal and installation activities.

Answer: Yes, some type of removal and replacement of building components is anticipated.

32 Question:

Attachment K.3 requests unit pricing for rental chiller equipment. Please clarify whether temporary cooling/rental chiller services are intended to be excluded from the Base Bid and utilized only upon Owner direction, or whether Contractors are expected to include any temporary cooling infrastructure, piping, power, controls integration, coordination, or associated work within the Base Bid.

Answer: Temporary cooling /rental cooler services are intended to be excluded from the base bid.

33 Question:

Attachment K.4 references a bathroom deduct alternate associated with slab opening and shaft modifications. Please confirm Contractors are to include all slab opening enlargement, shaft expansion, restroom modification, and associated restoration work indicated in the Contract Documents within the Base Bid. Please also clarify how the deduct alternate will be evaluated and applied if field verification determines enlargement of the existing opening is not required.

Answer:

Confirmed. Contractors are to include all slab opening enlargement, shaft expansion, restroom modification, and associated restoration work within the base bid as a separate line item. The deduct alternate will be determined by the COTR in consultation with the EOR and SMEs.

34 Question:

Please clarify responsibility for special inspections, testing agencies, and associated costs related to structural steel, welding, concrete repair, delegated design components, and other code-required special inspections.

Answer: Please review the contract documents, specifically Division 1.

35 Question:

Please clarify Contractor responsibilities associated with commissioning, including responsibility for commissioning coordination, TAB support, controls integration support, functional performance testing, seasonal testing, third-party commissioning participation, and correction of deficiencies identified during commissioning activities.

Answer: Please review the contract documents, specifically Division 1 and 230800.

This amendment has five (5) attachments

1. Attachment #01 Building A Basement IO report

2. Attachment #02 Building A Penthouse IO report

3. Attachment # 03 Building A MEP Drawings

4. Attachment # 04 Site Walk #02 May 20, 2026

5. Attachment # 05 Site Walk #01 May 11, 2026