AMENDMENT 0010.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

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

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

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

N40080-20-R-5270 Replace Chillers and Controls, National Maritime Intelligent Center (NMIC), Suitland Maryland

SEE SF30 BLOCK 14 CONTINUATION PAGE

1. CONTRACT ID CODE PAGE OF PAGES

J 1 20

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

16C. DATE SIGNED

BY 05-Nov-2021

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

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

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X N4008020R5270

X 9B. DATED (SEE ITEM 11)

13-Oct-2020

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer X is extended, is not extended.

Offer 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 Items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY 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 telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

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

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

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

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

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

D. OTHER (Specify type of modification and authority)

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

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

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

05-Nov-2021

CODE

NAVAL FACILITIES ENGINEERING SYS COMMAND

1314 HARWOOD STREET SE

WASHINGTON DC 20374

N40080 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

N4008020R5270

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE

The following have been added by full text:

AMENDMENT 0010

The purpose of this amendment is to provide the following:

1. The proposal due date has been extended to November 28, 2021 at 2:00 PM EST. The submission and delivery requirements remain unchange.

2. Provide RFI responses.

All other terms and conditions remain unchanged.

RFI RESPONSES

1. Would the government consider holding an additional site visit?

Government Response: Only one Government sponsored site visit will be held. The Government will not hold a second site visit at this time.

2. Pictures: If possible, please provide the following pictures:

a. Standing Plan south of Chiller Ch-1 looking Plan North behind all (4) Chillers (opposite the pipe connections).

b. Standing between CHWP-2 and 3, picture of the fire protection device that appears to serve the expansion area.

c. Picture of low (<8’ B.O.P.) HHW Pipe in front of Boiler B-1 on plan East Side of Plant

d. Picture of low CHW Pipe (<8’3”) at plan east of CHP-6.

e. Picture of the Interior door entering from the expansion area into the main plant

(both sides of door)

f. Picture of CHP-9 installation and proximity to adjacent pads on plan south side of

Pump.

g. Picture of Condenser water pumps and piping

i. Standing south of Chiller Ch-1 and looking North (behind the chillers)

ii. Standing behind Ch-3 and looking at CW Pumps.

h. Picture of AHU control panel (open)

i. Picture of 9x9 roll up door from outside

j. Picture of inside and outside where the Chilled Water and Condenser Water Taps are supposed to be located. (Next to the Roll up door).

Government Response: Pictures were taken on 10/26/2021. They are being vetted through the SSO. Once cleared, the pictures will be uploaded via an amendment.

3. As-Builts: If possible please provide the following additional as-builts:

a. Mechanical Piping from the CH-5 and CHWP-9 Addition.

b. Cooling Tower Renovation with:

i. Structural Steel/Dunnage

ii. Mechanical Piping and Routing.

c. Electrical As-builts including:

i. Floor plans

ii. Equipment Schedules

iii. One Line Diagrams

iv. Panel Schedules

v. Locations of electrical closets where control power is available.

d. HHW Piping added under Mains (Not shown on as-builts provided).

e. Floor plans showing thermostat locations

f. Floor plans showing wall types

g. Expansion Area As-builts

h. Natural Gas Routing through MER – (piping located above CHP-1 and 2).

i. MER Fire Protection As-builts – (3-4” Fire Protection Main over Chiller CH-3).

j. Electrical distribution showing the large racks of (emergency?) electrical

Conduits routed over the chillers (and feeding up to the generators)?

Government Response: Government has provided drawings that are available digitally.

During design, ktr will be able to access our flat files for additional records

4. Load Profiles: The RFP requires maintaining N+1 redundancy throughout the project for both loops. In order to understand how the facility operates can you please provide guidance on the type of load of the critical loop vs. the non-critical load profiles and operating schedules?

a. Critical Loop

i. What types of load does it serve? (e.g. IT, Comfort cooling, process cooling) Government Response: Critical loop serves mission critical IT infrastructure via fan coils units and SCU’s (also referred to as CRAC units) along with a select few AHU’s located in the Penthouse that provide comfort cooling to the areas that are mission critical.

ii. What is it’s run time?

Government Response: 24/7.

iii. What is the peak load.

Government Response: Winter 55% to 75% on one chiller / Summer 95% on two chillers.

iv. What is the minimum load overnight or in winter?

Government Response: 50% Winter 1 chiller.

v. Does it have airside economizers?

Government Response: Yes on AHU’s 3, 4, 8, 9, and 19.

vi. Does it have steady state loads that have no economizers?

Government Response: Yes, all IT server rooms.

b. Non-Critical Loop

i. What types of load does it serve? (e.g. IT, Comfort cooling, process cooling) Government Response: Non-critical loop provides comfort cooling only and is not supported by generator back-up power. Also feeds the E wing expansion IT server rooms.

ii. What is it’s run time?

Government Response: 24/7.

iii. What is the peak load?

Government Response: Winter 55% to 75% on one chiller / Summer 80% on two chillers.

iv. What is the minimum load overnight or in winter?

Government Response: Winter 1 Chiller 50%.

v. Does it have airside economizers?

Government Response: Yes, AHU’s 1, 2, 5, 6, 7, 11, 12, and (DOAS) Dedicated Outdoor Air System.

vi. Does it have steady state loads that have no economizers?

Government Response: Yes, IT server rooms in E Wing.

5. If available, could you please provide cut sheets of the existing chillers?

Government Response: A response will be provided in a forthcoming amendment.

6. Facility Chiller/Pumping Strategy: The Non-critical and Critical chilled water operate at nearly the same head pressure, and have multiple locations to switch between non-critical and critical distribution. What is the benefit to keeping (2) chiller critical and (2) non-critical?

Government Response: The critical chilled water system is served by back-up generator power where the non-critical loop is not.

The RFP also states the existing system has low chilled water dT. It seems like equal run time across the chillers, improved efficiency strategies, and flexibility would be preferable. Is there a time when the Non-critical loop is off?

Government Response: No.

From an operational perspective what does the facility gain from having (2) critical chillers, (2) non-critical, and a 5th stand-by vs all chillers available to serve either loop?

Government Response: As mentioned, critical chilled water loop is served with emergency generator back-up power. In the event of commercial power loss, our mission critical load maintains continuity of operations.

7. Rental Operational Hours: The rental chiller, generator, and fuel costs will have costs driven by run time. The run-time of the temporary chiller would be established by the downtime of the existing “N” capacity equipment. How many hours per day should the bidders assume the temporary plant will operate?

Government Response: The actual run time will be defined by the N+1 available system capacity and the single chiller down criteria, as well as the reliability of the commercial power. The temporary systems need to respond to potential call for need on 24/7 basis;

however, the actual run time will not be 24/7 as such to impact the use of fuel.

8. Existing CRAC Unit Quantity: The RFP requires DDC system to be added to all equipment including the Computer Room Air Conditioning Units (CRAC’s). During the site-walk an example CRAC unit under repair was noted with a typical existing DDC controller. The verbal description seemed to indicate many were located throughout the facility.

a. The as-builts schedule “Sensible Only Cooling Units”, but not CRAC or PACU units. Are these one in the same?

Government Response: Yes .

(total of 12) Government Response: There are more than 12.

If they are not the same could you please clarify whether they remain and should be added to the DDC System.

Government Response: All CRAC unit’s (also referred to as SCU’s ) are currently on the DDC system and shall receive new controls to replace existing. There are more than (12) SCU’s or CRAC units in the facility.

b. RFP Vol 2 Part 1 of 8 lists (2) CRAC Units and (71) Packaged Air Conditioning Units. Are the PACU units CRAC’s?

Government Response: Yes ( Should be field verified).

c. If the above items do not capture the quantity of CRAC units, please provide a quantity of each type or size of CRAC unit (or total quantity for basis of pricing).

Government Response: CRACs and Liebert PACUs are CHW cooling units, and a few units have electric RH and/or infrared humidifier. Trane units are packaged HP units. Field verify exact quantity and configuration.

i. Please clarify the quantity of control valves that need to be replaced for each CRAC Unit. (e.g. chilled water, hot water, humidifier if applicable).

Government Response: Replacement of control valves associated with CRAC/PACU units is not part of scope.

d. For the CRAC and Packaged AC Units, typically the manufacturer packaged controllers operate the device and the BAS only monitors. Please confirm and clarify whether the existing equipment has it’s own stand along controls or whether this is part of the JCI Metasys system.

Government Response: The CRAC units have standalone controls from the manufacture and are also monitored by the BAS via JCI DDC controllers mounted within the equipment. The BAS also has the ability to start and stop these units remotely from the operator workstation.

e. Can you please provide an equipment schedule of the PACU units or confirm the Sensible only units in the 1990’s as-builts are in fact the PACU Units?

Government Response: See response for Item 8-c above.

GENERAL NOTE: Quantities for all pieces and types of equipment per as built records and field verification

9. Existing Patching: In RFP part 3, the existing areas are described as having slab to slab walls and requires the fire/radio-frequency and acoustical rating of wall to be maintained and/or restored. RFP Vol 1a project description also states re-using existing network cable is not acceptable, later describing it as being removed. The bid documents don’t provide a good method of knowing how to quantify the existing penetrations or types of walls that require patching. Can you please provide a quantity and type of existing penetrations/openings to be patched?

Government Response: Exact quantities to be determined by the detailed design process required by the RFP. Repair damage to walls/ partitions/ slabs caused by this project. Assume all walls are special construction type (acoustic, fire rating, radio frequency, etc.) so damaging of those surfaces or systems resulted from modifications or alterations incurred during this project will need to be repaired.

10. Walls and Existing thermostats and wiring: Please clarify the following:

a. Are VAV and fan coil thermostats wired to the existing DDC Panels (with pathways).

Government Response: Yes.

b. Utility boxes/wall mounting will be able to be re-used.

Government Response: Yes, if possible.

c. Will In-wall wiring pathways/conduit will be able to be re-used. i.e. is there existing conduit in the walls for the existing thermostats and if not, is there a requirement to add conduit inside of walls.

Government Response: Yes, existing t-stats are in conduit except for the E- Wing where plenum rated cable is used and conduit pathways do not exist.

d. There is no requirement to upgrade acoustic treatments of the BAS wiring/Conduit/mounting boxes inside the walls.

Government Response: There is no requirement to upgrade acoustic treatment of existing conduit/boxes inside walls.

11. BAS Valve Replacement Scope: During the walk through, it was stated by some parties

(maybe they weren’t NAVFAC or ONI) that valve scope was to retrofit actuators on existing valves. However, the documents are clear that all control Valves (Bodies and Actuators) should be replaced. Please confirm the requirement is to replace all valves as described in AM 3, RFP Vol1a Part 3 Project Description, Page 5.

Government Response: Where the existing pneumatic/electric control valves are replaced, both valve body and actuators must be replaced.

12. Existing BAS Power: Based on the descriptions in the RFP many units already have

DDC Controllers. Is it reasonable to assume that electrical circuits and 24 V power is available at each device?

Government Response: Yes

a. Recognizing that the design builder will have to confirm the power is adequate, please confirm the electrical circuits, pathways, and feeders serving the existing DDC system can be re-used to power the new system.

Government Response: Confirmed.

b. Given that available 24 V power for controllers will be insufficient for larger valve and damper actuators per clarify whether existing electrical panels have sufficient spare circuits and capacity to connect new BAS circuits to.

Government Response: Numerous electrical closets with panels and spares for commercial use. Field verification.

Please advise where these electrical panels are located.

Government Response: Electrical closets located throughout building.

c. Please advise which AHU, CRAC, FCU, Terminal Units and/or other equipment items require emergency power for controls.

Government Response: All existing equipment served by generator power for the controls will remain on generator power (existing system) when new controls are installed.

13. FPIU’s: The VAV box list provided indicates about +/-152 of the terminal units are fan-powered induction units (FPIU’s). Please respond to the following:

a. The FPIU’s don’t appear to be scheduled on the as-builts

b. Do the FPIU’s serve the expansion area and can you provide the expansion area as-builts?

c. Are the FPIU’s inducing plenum air with low temp supply air only or do they also incorporate a chilled water coil?

Government Response: Yes, the low temp supply is for fresh air not for cooling. Blended chilled water coil and hot water coil.

d. How many of the FPIU’s have chilled water and heating water coils? (2 coils per unit)?

Government Response: A response will be provided in a forthcoming amendment.

e. A points list for an FPIU box isn’t provided. Are there any additional points or sensors that are unique to the FPIU’s… such as condensate cut-out switches?

Government Response: A response will be provided in a forthcoming amendment.

f. Is there another medium temperature chilled water loop that serves FPIU’s?

Government Response: The blended chilled water loop.

g. Please provide the power voltage/Phase for FPIU Units (not shown on as-builts) Government Response: FPIU’s serve the E Wing.

14. Chiller Marine Water Boxes: The RFP indicates the new chillers should include marine water boxes. This will require the existing piping to be reworked to provide CHW/CW connections on the sides in lieu of in front of the chiller? Based on a review of the existing conditions, it appeared that this would require a significant additional pipe work to accomplish, especially with the condenser water pipes routed between the chillers.

Government Response: Reconfiguration of the chiller piping is required to replace the valves, eliminate dedicated primary chilled water pumps for each chiller and to allow condenser water pumps to operate with any of the for chillers. Marine water boxes are required by the RFP to improve maintainability of the chillers by ensuring that the tubes can be accessed for cleaning/maintenance without removal of piping.

15. Terminal Units: The project description indicates the existing terminal VAV, FP boxes, FPIU’s and fan coil units are controlled by the DDC system with space temperature sensors, motorized control valves, and damper actuators. In part 3, it describes replacing the control valves. In the RFP concept set (Am 004 - Vol 2 part 1 of 8), it shows the VAV boxes with pneumatic control valves and damper actuators that are indicated to be replaced. During the walkthrough, it was stated that all terminal devices have a DDC controller. Please clarify the following:

a. Are existing terminal units and FCU’s controlled by the DDC?

b. Subject to confirmation by the design builder can Electrical wiring and pathways be re-used to serve new DDC equipment?

c. Are the VAV and fan coil thermostats wired to terminal equipment with pathways inside the walls? Are other mountings of thermostats utilized?

d. Are the valves required to be replaced regardless of whether they are pneumatic or electric?

Government Response: Yes, except for the electric motorized cooling valves on the Liebert (SCU’s / CRAC ) units. See section 8d in RFI.

Please confirm for the basis of pricing, bidders should plan on re-using terminal unit sensors.

Government Response: Any damaged, malfunctioning, and/or incompatible sensors and control/field devices must be replaced with new.

16. BAS Status Print Out: Can you please provide a print-out from the BAS that shows all current sensors and readings/status? This would give a good indication of what sensors may need to be replaced.

Government Response: During design, ktr will be able to gain access to this information

17. Can you please confirm the following equipment, scheduled in the as-builts, but not uniquely indicated in the RFP narrative should be part of the DDC system upgrade?

a. Reheat Coils (Qty 37) scheduled on As-builts and in equipment lists in RFP Vol

2.

b. Electric Humidifiers (Qty 8)

c. Electric Air Door (Qty 3)

Government Response: Reheat Coils, Humidifiers, and Air Curtains are currently on JCI. A site visit can be arranged with the Government to collect the information from the existing JCI system after award. The quantities above do not seem correct. Verify in field. GENERAL NOTE: Quantities for all pieces and types of equipment per as built records and field verification

18. AHU Quantity: There are (18) AHU’s scheduled on the 1990’s as-builts and (1) Kitchen

Ventilation Unit. There are (12) AHU’s shown on the penthouse floor plans. There are

(21) air handling units listed on the existing DDC equipment in Part 1 of the RFP including a Cafeteria unit, (1) expansion DOAS unit, and (1) Expansion AHU. Please clarify the following:

a. There are (20) AHU’s that require controls upgrades and these include the Kitchen ventilation unit.

Government Response: Confirmed

b. There is (1) DOAS unit. Please provide a schedule for this unit.

Government Response: AHU-1 (DOAS) in E-Wing is 100% OA unit with heat recovery coil with pump, HW heating and CHW cooling coils, supply fan, exhaust fan, exhaust/relief fan, OA/EA dampers and filters. Refer to the attached PDF, “NMIC EMCS Seq. DOAS.PDF” for control diagram, control sequence and points schedule. GENERAL NOTE: Quantities for all pieces and types of equipment per as built records and field verification

19. Please confirm there is not DDC Scope associated with the air filter schedule on the as-buitls.

Government Response: Air filters monitoring/alarm points associated with AHUs and other equipment that are currently on the existing JCI should be part of scope.

20. Existing Architectural: The documents indicate that all existing control wiring must be removed, but that pathways may be re-used. It is also stated that the facility includes SCIF space and identifies SCIF wall construction. The existing as-builts indicate predominantly 2x2 acoustical ceiling tile, and some walls. Please clarify the following:

a. What is the existing ACT product?

Government Response: Armstrong beveled Tegular 2195 ceiling tiles.

b. Is there a requirement to replace and/or match existing ACT?

Government Response: Yes, If the contractor damaged the tile during the project.

c. Can you please provide a picture of the ACT.

Government Response: This should not be needed, product information provided.

d. Can you please provide an As-built of wall types, including walls that go floor-to-slab?

Government Response: Government has provided drawings that are available digitally. During design, ktr will be able to access our flat files for additional records

21. Pre-work TAB: The RFP requires pre-work Test and Balance for the Chilled water plant, including Condenser Water Side, the HHW system, each AHU, VAV, CRAC unit, and

FCU.

a. Are any special hours required for working in tenant space?

Government Response: In general, no. However this will need to be coordinated as part of the phasing schedule.

b. Does the facility have the ability to command the DDC in such a way to complete this balancing, or should the bidders include money to hire JCI to modulate the system operation?

Government Response: The contractor should include balancing in the proposal.

Does not necessarily have to be JCI.

22. BAS Conduit: The ESR D306001 1.1.1 states all control wiring is to be in conduit. Please confirm this is intended for exposed areas only. Please confirm above ceiling spaces may use plenum rated cable. Please advise if any SCIF or other security areas require conduit for penetrations or other conditions.

Government Response: Control wiring shall be in conduit where it currently is in conduit now. Only the expansion area (aka E-wing) uses plenum rated cable and the control wiring is not in conduit. Corridors A-D and all other areas such as the CUP use conduit for control wiring.

23. Above Ceiling Electrical/DDC communications wiring. Are there secure areas where the new electrical and/or controls wiring be required to be in conduit to meet any existing security/SCIF requirements and/or plenum ratings? If so, can you describe which areas this applies to?

Government Response: See item 22 match existing.

24. PTS Requirements: RFP Volume 1b includes Part 4 Performance Technical Specifications, which appear to be standard specifications that are not edited to match the RFP scope. They include many elements of scope which are not noted elsewhere in the project including boilers, heating hot water pumps, Steep Slope Roofing Systems, Slate roofing, Furnishings, etc. Please clarify that RFP Vol. 1b, Part 4, Performance Technical Specs are only applicable to the extent the scope is required by RFP Vol 1a. Part 3, Project Program and Engineering System Requirements.

Government Response: Standard Government approach for RFP development. Work required for this project is all inclusive in support of the performance criteria and scope described in the RFP. Part 4 in the RFP is intended to support the all- include work expected by the Government.

25. Elec As-builts: Please provide the electrical As-builts showing:

a. Electrical Room locations where circuits may be available for new DDC panels and low voltage circuits.

b. One Line Diagrams showing the overall system.

c. One Lines of the Chillers and Pumps from the Switchgear line up.

Government Response: Government has provided drawings that are available digitally.

During design, ktr will be able to access our flat files for additional records.

26. Existing T-Stats: Please provide plans indicating thermostat locations.

Government Response: To be validated by the contractor through field verification. For new thermostats, the contractor to locate through the design process. Government has provided drawings that are available digitally. During design, ktr will be able to access our flat files for additional records.

27. Existing UH/EWH Qty: The RFP describes a complete new DDC Systems including unit heaters thermostats that are not currently on the pneumatic/DDC systems. Please confirm the below:

a. The as-built schedule shows (4) HW Unit Heaters – Please confirm this is the total amount.

b. The as-built schedule shows (4) Elec Unit Heaters – Please confirm this is the total number of Elec UH to be added to the DDC.

c. The as-builts show three types of Electric Wall heaters with “various” Quantities

– Please confirm these are not part of the DDC System.

Government Response: As-builts provide best available information. Field Verify quantities. Quantities for all pieces and types of equipment per as built records and field verification

28. Existing Low Pipe vs. Chiller Height: The Existing Chiller Ch-1 and CH-2 scale to 10’- 2 ½” in the as-builts. Existing Chiller CH-3 and 4 scale to 9’- 5 ¾”. Are the existing chilled water piping mains (scale to 8’3” Bottom of Pipe on the as-builts at several locations) at 8’3” or lower in the chiller rigging path? Also, the HHWS/R Mains appeared to have had modifications not shown on the as-builts that were observed on the site visit to be lower than 8 ft. It didn’t immediately appear that these pipes could be reworked to maintain plant operations. Can you please provide an as-built of the HHWS/R mains to evaluate the spatial clearances? The RFP project description (Vol 1a, Part 3) states that the new chillers should be rigged in and field assembled on the pads. Please confirm whether these obstructions could be modified to enable the existing and new chillers to be rigged out/in in single pieces.

Government Response: Jacobs does not have any additional as-built drawings. The design/builder may modify piping to enable chillers to be rigged in/out in a single piece as long as the requirements for system outages can be met.

29. Double Door Enlargement: Does the RFP requirement of enlarging the 6’x7’ high door apply regardless of whether we need to enlarge the opening for this project?

Government Response: Preference is for new chillers to be brought into the space in one piece. The doors were enlarged to make that easier to do. If the new chillers must be brought into the building in pieces regardless of whether the doors are replaced, Jacobs does not object to leaving the existing doors in place. Enlarging the door requires also enlarging the door opening as stated in the RFP. Enlarging the opening just to allow the transport of equipment to then reinstall the smaller door an infill the opening to original conditions is not acceptable.

30. Rigging access vs. CHP-9. The rectangular representation of the chillers on the rigging path on MD-101 (In RFP Vol 2) is 4’11” wide and 14’6” long. The basis of design chiller cut sheet is 6’-9 ½” x 14’-9 9/16” and the existing chillers scale to 7’6 ½” wide x 16’ long on the as-built.

On MD-101, CHP-9 is installed close to CH-5 and is about 9’4 ¼” from the adjacent shelves.

However, during the site visit, it appeared the shelves and CHP-9 were much closer together than shown on the plan (7 – 8 ft). During the walkthrough there were several pads and pieces of equipment where the “Shelving” is depicted. Can you please provide an as-built of the CHP-9 and the adjacent equipment item to evaluate the rigging needs? Can you please clarify what the adjacent equipment item is?

31. Existing CWP Configuration: The RFP project Description and ESR D30 requires all condenser water pumps to be headered to enable any Condenser water pump to operate with any chiller. When the Cooling Towers were relocated to the roof and Chiller Ch-5 was added, were these pumps and piping upgraded? Could you please provide as-builts and pictures of this work?

Government Response: YES, there were modified when cooling towers were relocated.

Government has provided drawings that are available digitally. During design, ktr will be able to access our flat files for additional records.

32. Headered CWP’s: When the RFP requires the Condenser water pumps to work with “any” of the (4) chillers, it seems to omit Chiller Ch-5 and associated pump. Is that intentional? If Chiller 5 does have a CW pump that should be added, we would need as-builts of how it ties into the system to price it.

Government Response: Yes any of the 5 condenser pumps to run any of the 5 chillers.

Government has provided drawings that are available digitally. During design, ktr will be able to access our flat files for additional records.

33. Existing CWS vs. CH-1 and CH-2 Pipe Connection: The Condenser water piping appeared to be retrofitted for CH-5 and routed in between CH-2 and CH-1, then in front of CH-1. This pipe does not seem to be shown on the as-builts. It appeared this pipe is required to operate to maintain operation of Chiller CH-5, but the pipe bottom elevation was lower than 8’9”, and it will obstruct new marine water box connections for chillers 1 and 2. The pipe location will make it difficult to assemble a new chiller on the pad and neither existing or new chillers will fit under the pipe while Chiller Ch-5 is operating. Can you please provide the chiller Ch-5 as-builts showing this routing threading through the CH-1 Pipe Connections?

Government Response: this is not the CWS for chiller 5, it is for the waterside economizer.

Relocation of piping in conflict with new equipment must be included. Government has provided drawings that are available digitally. During design, ktr will be able to access our flat files for additional records.

34. Existing Roll Up Door vs. Chiller Height: The existing Conditions are noted to have a 9’x9’ roll up door, but the existing chillers are 9’2” and 9’4” respectively. For this and other reasons above, the existing chillers will have to be dissembled to be removed from the facility. Please confirm the removed chillers will become the property of the bidder and there is no expectation to re-assemble the chillers. Please confirm no credit is due to the government for the salvage value of the chillers.

Government Response: See item 49.

35. Existing Refrigerant: Please confirm for the purposes of pricing the refrigerant recovery and refrigerant itself are the responsibility of and property of the design builder with no credit due to the government.

Government Response: Removal and disposal of the refrigerant is the responsibility of the design builder and associated costs/credits must be included in the project contract price.

No separate credit is required.

36. Insulation Materials: Please clarify whether new chilled water and condenser water pipe insulation and jacketing should match existing conditions or should new insulation be provided with different piping products indicated in AM 3, RFP Vol 1b, Part 4 D30 Insulation Means and methods.

Government Response: Provide ASHRAE 90.1 compliant piping insulation with vapor barrier per ESR D30 requirements.

37. The RFP provides a series of solutions with several requirements for the outcome of the project. However, alternate solutions and methods may represent better value to the facility with reduced impacts ad risk to the continued operation of the facility. Can these options be provided as voluntary alternates on the bid form?

Government Response: Response to be provided at a later date.

38. In the Amendment 002 Basis of Design Narrative Paragraph 5.6 Cyber Security, it states provide C-I-A levels Moderate-Moderate-Moderate. In section 4.6 the chart indicates that the C- I-A level should be LOW-LOW-LOW. Please confirm Moderate-Moderate-Moderate is correct.

Government Response: CIA impact levels Moderate-Moderate-Moderate indicated in Par.

5.6 is correct.

39. What is the make and model number of the existing refrigerant leak detection system serving Chiller CH-5?

Government Response: Make – MSA Chill Gard LE / Model# A-LE-D-4-1-0-1-1-4-0-0-0-0- 0-0-0-0-0.

40. JCI Controls: The RFP seems to be written as a completely new, open BACnet DDC system that is open to any controls bidder. Does the facility see value in having a completely new Johnson Metasys system meeting the RFP requirements while maintaining continuity and reliability through construction? Or does the facility prefer a completely new controls product for an alternate manufacturer?

Government Response: The facility requires a completely new controls system that meets the RFP requirements while maintaining continuity and reliability through construction while also integrates with the facility’s goals for operation and maintenance.

41. Available Power: The RFP Documents do not provide sufficient electrical information on the emergency or normal power switchgear and motor control centers. The RFP throughout requires a temporary generator and fuel tank for the temporary chiller and pumps. Please clarify the following:

a. Is the reason a temporary generator is required due to a lack of capacity for normal power, emergency power, or both?

b. What is the reason that the temporary generator is required instead of powering the temporary chiller from existing normal and emergency distribution equipment?

Government Response: No modifications nor alterations of the electrical systems are desired for extensive work such as extending power for temporary equipment.

c. Please identify which switchgear serves each chiller.

Government Response: SWGR #1, #2, and #3. Each of the existing five chillers in the plant are fed directly from one of these SWGR lineups.

d. What spare capacity and connection provisions are available in each switchgear?

Government Response: Government has provided drawings that are additional records.

e. Please provide electrical as-builts, one line diagrams, and equipment schedules to understand and price this work.

Government Response: Government has provided drawings that are additional records.

42. AHU Controls: In the RFP it describes the AHU controls as replacing valves, valve actuators, Damper Actuators, and all other pneumatic devices. Please provide a list of sensors that should priced for replacement for each AHU.

Government Response: A list of any damaged, malfunctioning, and/or incompatible sensors and control/field devices must be generated and sent to the Government for direction as described on Page 12 in RFP Part 3, Chapter 1.

43. In RFP Volume 2, part 1 of 8, Drawing MD-101/M-101, the temporary pumps are shown installed inside the plan northeast section of the MER. During the walkthrough, it was observed that this location is immediately in front of the electrical panels. Will the pumps be able to be installed here or must they be installed in another location?

Government Response: Temporary pumps must be located to comply with NEC requirements for panel access.

44. Please provide plan view locations of the three switchgears feeding the Chillers.

Government Response: Government has provided drawings that are available digitally.

During design, ktr will be able to access our flat files for additional records.

45. Please provide electrical 1-Line drawings for the CUP, normal and emergency power.

46. Please provide Riser diagram, panel schedule, AIC ratings, and photos for: MCC-NMCP1A, MCC-EMCP1A, MCC-EMCP1B, Generator paralleling gear, and SWGRs serving the CUP.

47. Please identify the 4 ATSs, against the wall near CH-4, by equipment served.

Government Response: ATS’s 9 – chiller 1, ATS chiller 2, ATS 11 – cooling tower, CHW pumps, Fuel oil pumps, and other items in plant, ATS 18 – CW pumps.

48. Are the 4 Chiller Disconnect Switches (shown on MD-101) ETR, demo’d, or demo’d and replaced?

Government Response: Demo’d and replaced.

49. Please clarify the owners’ instructions for demolished materials. Are any demolished equipment or materials to be returned to the owner?

Government Response: No must be removed from site.

50. What is the Fire protection device between CHP-2 and CHP-3 and what clearance requirements does it have?

Government Response: Air compressor for dry pipe and control valve the plant fire suppression system. Need to have unobstructed service access, area is currently marked for access clearance.

51. Please confirm the electrical pull boxes over chillers (current clearance of 1-2 feet at places) is the not the design builder’s responsibility to fix if the new chillers impede on the clearance.

Government Response: Per NEC code requirement.

52. In RFP Vol 1b Part 5, Prescriptive Specification 25 05 11.23 Cyber Security, 1.7.2 requires 2 years of Risk Management Framework. This may limit bidding contractors, and is costly.

Please advice if required.

Government Response: This is NAVFAC requirement added to UFGS.

53. Do the CRAC’s and PACU units have BACnet compatible manufacturer controllers?

Government Response: CRAC’s units have field server integrator for BACnet view only.

PACU are not BACnet compatible.

54. Amendment 2, Page 7 of 20, states the total length of the technical approach and schedule narrative shall not exceed 10 single-side pages. Please advise if the Summary Level Schedule is included in this page limit, or in addition to this page limit.

Government Response: The Summary Level Schedule is not included in the page limit.

55. SECTION 01 32 17.00 20 1.9.1 Qualifications states “The scheduler shall be a Project Management Institute Project Management Professional (PMP) or a Project Management Institute Scheduling Professional (PMI-SP).” In lieu of the PMP cert., would an AACEI (Association for the Advancement of Cost Engineering, Intl) PSP (Project Scheduling Professional) cert. be acceptable?

Government Response: A response will be provided in a forthcoming amendment.

56. SECTION 01 32 17.00 20 mentions the requirement for the scheduler to be present at monthly, on-site / in-person meetings. In lieu of on-site / in-person meetings, can the scheduler be remote and participate virtually via the web?

Government Response: In-person will be required due to lack of ability to hold virtual meetings from the building. Virtual attendance will be permitted in cases where it is possible.

57. Site Walk Pictures: We request the following pictures from the site walk-through:

a. Multiple pictures of the chiller plant.

b. Chiller removal material handling path.

c. Wall sections on either side of the doors that need to be opened to allow removal/installation of the new chiller.

d. Various pictures of the cooling towers and existing catwalks to include all structural steel.

e. Chiller model/serial number of chiller #5.

f. Model/Submittal of existing ATS that services the chillers.

g. Area of proposed temp chiller and backup gen-set.

h. Typical AHU and VAV box.

Government Response: Pictures were taken on 10/15/2021. They are being vetted through the SSO. Once cleared, the pictures will be uploaded via an amendment.

58. Is it the intent of the government to epoxy coat the entire mechanical room floor within the chiller plant? Will the AHU penthouse mechanical rooms be epoxy coated as well?

59. Does the government have a basis of design for the new control valves that will be installed?

Government Response: The design builder is responsible for basis of design control valves.

60. Can the government provide the current fire alarm contractor that services NMIC, to include contact information?

Government Response: BFPE. Hanover MD is the office location that supports the NMIC.

61. Part 3 – Chapter 6 – Page 4.3: Will the government provide clarification on the following statement? “For critical systems, the operation during demolition of the old system components and cutover to new systems must require a temporary N+1 system”. Is the Design-Build contractor required to provide (2) 710 chillers per the Temporary N+1 system? Or is it the government’s intent for the contractor to provide (1) temp 710 ton chiller and utilize existing chiller #5 for N+1 chiller?

Government Response: One critical chiller may be removed at a time. The remaining 710 chiller plus 1 temporary 710 chiller plus CH-5 must be available while the single chiller is replaced.

62. Part 3 – Chapter 6 – Page 4.4.a: Please confirm the following statement. “Complete Chiller System Outage: Critical chilled water system, non-critical chilled water system or both critical and non-critical systems are out of service. The maximum duration of a complete chilled water outage is 3 days (holiday weekend) and outage must be coordinated 90 days in advance. Only 1 Complete Chiller System Outage will be allowed”. We would just like to confirm that the government will allow one (1) complete chiller system outage including critical and non-critical systems.

Government Response: Confirmed.

63. Will the Design-Build contractor need to issue design documents in 3D?

Government Response: The RFP does not have requirements for 3D.

64. Will all control devices need to be recalibrated at the end of this project?

65. Page 271, Electrical Scope: Please confirm reference to "rework the positioning of electrical equipment… to meet the NEC and UFC" is limited to equipment being modified in this scope and piping, not an evaluation of all electrical equipment in the chiller plant.

66. Can existing control panels be used as terminal strips/junction boxes, or must they be fully removed at the end of the project? Note: If they are re-used this will take up wall space.

Government Response: No fully remove old equipment.

67. Is there a preference or requirement for single vs. multi-compressor chillers?

Government Response: No preference.

68. Will the government consider a conversion from existing primary-secondary pumping to vari-prime chilled water pumping system?

69. It is referenced that the existing P&F-HX on the critical CHWS does not operate correctly.

Will the successful offeror be responsible for troubleshooting and repair of this HX?

Government Response: HX sensors and controls are to be replaced. The contractor is responsible for making the controls work to that the HX can be repaired in the future. The contractor is not responsible for troubleshooting and repair of the HX system.

70. As it relates to all new BAS outside of the utility plant, will a full escort be required even if our trade partners have top secret clearance?

Government Response: Yes, escort’s will be provided by the government.

71. Please confirm conduit requirements for controls, and confirm if existing equipment has all control wiring in conduit above ceilings.

Government Response: Control wiring shall be in conduit where it currently is in conduit now. Only the expansion area (aka E-wing) uses plenum rated cable and the control wiring is not in conduit. Corridors A-D and all other areas such as the CUP use conduit for control wiring.

72. CRACs and PACUs: Please confirm the equipment has onboard BACnet controllers for integration into the new BAS. If not, please provide control drawings showing how these are to be controlled.

Government Response: CRAC’s units have field server integrator for BACnet view only.

PACU are not BACnet compatible.

73. Amendment 2, Page 3 of 20, Text pages 8 ½ x 11 format: Please advise if the Summary Level Schedule, that is to be included in Factor 5 – Technical Solution, can be 11 x 17, in lieu of 8 ½ x

11. If it can be at 11 x 17, does each 11 x 17 page count as one page or two pages against page limits.

Government Response: The Summary Level Schedule is not included in the page limit.

74. Will the UMCS-HVAC system require multi-factor authentication?

Government Response: Provide security function as described on Page 18 in RFP Part 3, Chapter 6/ESR D30. In addition, provide any additional security measures and functions per Cybersecurity requirements.

75. Will the UMCS-HVAC server require Nessus/ACAS VM? If so, will the gov’t provide a license under the DISA program or is the contractor required to provide the license?

Government Response: Not required, out of scope.

76. Will the UMCS-HVAC server require Network Monitoring software?

Government Response: Not required, out of scope.

77. Does the UMCS-HVAC server require a redundant server? What is the recovery time objective/availability requirements?

Government Response: No redundant server is required. Provide a server and three additional remote workstations as required in RFP.

SECTION 00010 - SOLICITATION CONTRACT FORM

The required response date/time has changed from 10-Nov-2021 02:00 PM to 18-Nov-2021 02:00 PM.

(End of Summary of Changes)