SOW - Improve OR and SPD HVAC 12-18-25.docx

STATEMENT OF WORK

PROJECT NO. 526-23-133 IMPROVE OR AND SPD HVAC

JAMES J. PETERS VA MEDICAL CENTER

130 WEST KINGSBRIDGE ROAD

BRONX, NY 10468

The Department of Veterans Affairs is accepting proposals from qualified firms to provide construction services for labor, material and supervision related to the Improve OR and SPD HVAC project located at the James J Peters VA Medical Center, 130 West Kingsbridge Road, Bronx, New York 10468.

The scope of work for this project is as follows:

The first objective is the site preparation, demolition, and new construction of the one (1) rooftop chilled water system or similar backup system and make design modifications for the one (1) existing critical AH-16 to achieve the comfort level humidity and cooling temperature based on ASHRAE standards that serve the O.R. area in Building 100 at the James J. Peters Medical Center. In addition, new construction of one (1) backup chilled water system and design modifications for the one (1) existing critical AH-02 to achieve the comfort level humidity and cooling temperature based on ASHRAE standards that serve the S.P.D area in Building 100 at the James J. Peters Medical Center. Two (2) backup chillers shall be capable of providing more than sufficient capacity as the secondary source for the normal operation, for emergency operation, and extra capacity for future loads. The new backup chillers will be capable of variable chilled water flow.

The second objective is to provide motorized automatic change over valves to switch between the backup chilled water system and the main chilled water system. All work shall be completed as specified on the plans, specifications, and contract documents.

The third objective is to reuse the existing roof dunnage to accommodate one (1) new chiller for AH-16 and build a similar roof dunnage for the second chiller for AH-02 based on a Risk Category IV Healthcare Facility (ASCE7-16) standards

In addition, all work shall be done in accordance with the contract bid documents.

STRUCTURAL:

Existing Dunnage:

The existing dunnage shall be demolished. The roofing shall be patched to match existing roofing in the area where the existing dunnage posts were removed.

Area E Roof Chiller Support:

New dunnage shall be provided on the roof Area E to support the new chiller. Necessary stairs shall be provided for access to the existing roof. The dunnage shall be supported by HSS posts directly from the existing columns.

Area G Roof Chiller Support:

The chiller on the G-Wing roof shall be supported by a dunnage, which will be support by HSS posts directly from the existing columns. Necessary stairs shall be provided for access.

Floor of Mechanical Room in Area E:

The existing W12x19 steel beams shall be reinforced by welding additional WT6x11 section to the bottom of the beam.

All new concrete poured for new housekeeping pads is required to be no less than 4,000 psi New housekeeping pads are to be provided for any new equipment installed in all mechanical rooms as a part of this project

ARCHITECTURAL

0. Cutting, patching and flashing of existing roof systems to accommodate new chillers, equipment platforms, and piping.

0. Firestopping, sealing, and fireproofing repair as required for new work in existing mechanical and electrical rooms, and routing of piping and conduits through existing spaces.

0. Painting mechanical room floors and equipment pads.

1. The proposed renovations will impact the following existing spaces:

1. Mechanical Rooms 2E-11, 3E-63, GG-09E, and 2B-65 will receive new equipment within the existing space. New piping will traverse Mechanical Room 1B-40. New wall and floor penetrations will be sealed.

1. Mechanical Rooms 2E-11, 3E-63, and 2B-65 will receive new concrete equipment pads.

1. E-Area and Area G roofs will receive new elevated steel platforms to support the new chillers. New piping will cross the roof areas to riser locations in the mechanical rooms below.

1. Electrical feeders for the new chillers will originate in Electrical Rooms GH-01 and GH-05 and routed through the Ground Floor interstitial space and existing shafts to the E-Area and G-Area roof areas.

1. Architectural work generally consists of cutting and patching to restore the integrity of spaces after mechanical and electrical systems have been modified, including joint sealants, firestopping, and steel fireproofing.

1. Other finishes are existing to remain. All mechanical room floors in the scope will be gray, and all new equipment pads will be painted yellow.

1. Existing roofing systems will be cut and patched as required to accommodate new chillers, steel posts at elevated platforms, and new pipe and conduit penetrations. The existing roofing systems will be maintained.

1. Temporary protections will be defined in accordance with the VA’s standards for Infection Control Risk Assessment (ICRA), Interim Life Safety Measures (ILSM), and dust control

1. Infection control construction barriers are required be finished to level 4 finish.

1. ICRA construction hard barriers shall be Class 4 which requires a hard barrier anteroom and negative air machines

MECHANICAL:

Replacement of the existing and abandoned 190-ton rooftop air-cooled chilled water system, with a nominal 290-ton air-cooled scroll chiller system, integrated pump and accessories package, and modification of existing O.R. AHU-16 to achieve the proper temperature and humidity requirements identified for the operating suite spaces. O.R. Chiller system shall consist of (2)154-ton scroll machines per compressor type preference by VA.

Installing a new dedicated 140-ton nominal rooftop air-cooled chilled water system to serve the existing SPD AHU-02, with modifications to AHU-02 cold deck to achieve the proper temperature and humidity requirements identified for the SPD department.

AHU modification designs are based upon replacing the existing cooling coil in AHU-16 with new copper fin coils (2), replacing the existing cooling coil in AHU-02 (aluminum fins), providing an OA to EA heat pipe recovery coil system between the SPD AHU-02 EF-

41. For freeze protection considerations, propylene glycol chilled water shall be preferred over heat-tracing and monitoring, as well as reduced need to drain the new chiller systems serving the OR and SPD. Per site extreme winter conditions, 40% propylene glycol allows protection to -5°F ambient and shall be used for. Additional mechanical floor space for heat exchangers, glycol fill, pumps, and water treatment will be needed directly below rooftop in area E and G to accommodate glycol components. New equipment pads and mechanical room layouts will be revised to allow fit and weight of components. Each chiller shall include a mfr. provided “hydrokit,” including expansion tank, strainer, flow switch, piping extension, and dual-pump package that will remain outdoors beneath the chiller unit and end mounted platform dunnage. Components will be protected by glycol from freezing. All CHW piping without glycol must reside indoors and have independent loop to serve AHU coils directly or to tie in central plant CHW for emergency backup. New HVAC equipment will be designed with controls to operate as part of the existing Building Automation System (BAS). Implementation of the integration of those controls into the BAS, including software upgrades, hardware upgrades, programming, etc., will be specified as carried out by the installing controls contractor for the facility, ITC Technologies. Design modifications to existing site/campus BAS controls system will be carried for new integration requirements of the new Chiller systems. The replacement of all AHU equipment controllers, sensors, points, switches, and relays shall be upgraded for the associated AHU-02. The SPD AHU-02 AHU shall include a replacement of the existing 2x2 plenum fan array to accommodate airflow pressure drops and existing static issues causing current fan operation to surge. The two (2) primary chillers shall be capable of providing more than sufficient capacity as the primary source for the normal operation, for emergency operation, and extra capacity for future loads. The new primary chillers shall be capable of variable chilled water flow and submit engineering calculations to propose the outside air operating temperature to maximize the energy conservations by switching between primary chilled water system and backup central plant chilled water system. Each AHU piping system shall be provided with motorized automatic change over valves to switch between the backup chilled water system and the main chilled water system with manual operation or override capability. Steam to HW heat exchanger will be installed in the Area G ground floor mechanical room. 1st floor area G mechanical room 1B-40 containing AHU-8 will utilize the required additional room for glycol heat exchanger, glycol fill station, dual inline pump, water treatment, etc. near adjacent plan west wall. The new concrete equipment pad (approx. 14x7) will house the new equipment. New glycol chilled water will be routed from the roof, thru 2nd floor, to the 1st floor glycol to water heat exchanger, and new 5” dia chilled water coil loop piping will be routed from the heat exchanger down thru the first floor near the existing OA shaft. SPD chilled water coil piping will be routed down from 2nd floor to the Ground floor room and tie in with new 3-way automatic bypass valving to the existing Plant chiller water in Ground floor GG-09E Mech room. Existing AHU-02 CHW coil and piping to be removed back to the CHW plant riser location in the corner of the room for new connections. Additionally, new glycol fill station, dual inline pump, and chemical treatment will be mounted on a new equipment pad where current air filter storage boxes reside in a 6x8 corner – plan NW. Replacement of existing OR CHW piping down to 2nd floor will be upsized to 6” dia using the same existing riser pathway. OR chilled water coil piping will be routed down from 3rd floor to the 2nd floor and tie in with new 3-way automatic bypass valving to the plant chiller water at the 2nd floor in 2E-11 Mech room. Existing CHW piping and AHU-016 CHW coil to removed back to the riser location in the corner of the room for new connections. Demolished Chiller will also have its expansion tank and air separator removed from the mech room and allow space for the bypass valving.

Testing Adjusting and Balancing is the whole responsibility of the contractor to coordinate and provide.

All new chillers to be installed shall be York YLAA0170SJ46XFB or equal.

All new chilled water pumps shall be Armstrong series centrifugal pumps or equal.

Each new chiller system shall include a new frost proof hose bib installed for condenser coil rinse down near the new rooftop dunnage locations.

Please see the attached Brand name or equal with the salient characteristics of the required Chiller and Chilled Water pumps.

ELECTRICAL:

GENERAL REQUIREMENTS:

1. Schedule work to minimize interference with the facility’s normal operations. Normal operating hours are from 8:00am to 4:30pm Monday thru Friday except federal holidays. Any work during other hours unless otherwise instructed or permitted shall be scheduled and approved with the Contracting Officers Representative.

2. All disposals shall be done in accordance with federal, state, and local laws and regulations. All bulk waste shall be disposed of in contractor provided dumpsters. Monthly waste reports are to

3. All proper infection control and life safety measures will be abided and coordinated with Infection Control and Safety Officer.

4. Bidders are required to carefully examine the Scope of Work and Contract Documents in their entirety. A minimum of one (1) on-site examination of the facility, conditions, existing components, and work areas by prospective Bidders and their subcontractor(s) is required prior to bid submittal. Bidders are responsible for the total content of their submittals, including all assumptions, attachments, addendums, and technical requirements incorporated by reference. For these reasons, on-site examinations are required. Bidders are encouraged to evaluate and field measure, as necessary, to formulate and submit accurate and complete bids. Errors or omissions, not due to unforeseen site conditions, are the responsibility of the Bidder. Proper due diligence is paramount.

5. Prior to any equipment and/or materials being delivered to the site to be stored, staged, utilized, or installed as a part of the project, the Contractor shall have submitted to the Contracting Officer’s Representative a formal project plan (using Microsoft Project or other commercially available software product designed for this purpose) indicating phasing and or sequence of operation which helps identify and coordinate the overall effort. This plan requires the review and prior written approval of the COR.

6. The Contracting Officer has the right to reject defective workmanship, materials, and/or work not performed in compliance with applicable VA requirements, project drawings, and project specifications. Only the Contracting Officer or his/her representative may accept work performed by the contractor.

Estimated Completion Time (excluding any and all equipment lead times): 360 Calendar Days.

PERMITS AND RESPONSIBILITIES:

The Contractor shall, without additional expense to the Government after award of the contract, be responsible for all damages to persons or property. The Contractor shall take proper safety precautions to protect the worksite, the workers, the public and the property of others. Contractor shall also be responsible for all materials delivered and work per-formed until completion and acceptance of the entire work.

PROJECT MANAGEMENT:

Contractor shall assign a full-time site superintendent for the duration of the project in its entirety. The site superintendent and Project Manager must have a minimum of 5 years of direct experience in HVAC-related projects. The Project Manager shall have the necessary training, knowledge, and experience required to help ensure the timely and successful completion of the project and all related duties. The Contractor will submit qualifications of their Project Manager to the Contracting Officer’s Representative within 10-days of contract award. The Project Manager shall be the on-site representative of the Contractor and shall oversee all aspects of day-to-day project operations and shall serve as the Contractor’s primary point of contact, including the ability to meet with the Contracting Officer, at the Government’s convenience, for meetings to discuss project status and/or contractual issues as necessary.

AUTODESK CONSTRUCTION CLOUD (ACC) ACCESS REQUIREMENT

1. Construction contractors and A/E design firms, selected by award to perform work at VISN 2 VA facilities, are required to utilize VISN 2 Autodesk Build Construction management platform, also called Autodesk Construction Cloud (ACC). Access to the platform and training portal will be provided by VISN 2 through project Contracting Officer Representative (COR). at no cost for the duration of the project. Autodesk Build is the management and collaborative environment that VISN 2 uses for all its Non-Recurring Maintenance (NRM), Minor Program projects, Feasibility Studies, Commissioning and Retro-Commissioning contracts. There is no user, license, or subscription fee to the contractor for using this cloud-based platform.

1. Contractor shall complete the following tasks upon award of contract:

1. Request access to ACC platform and ProductivityNOW eLearning Site to project VA COR NLT 14 days from contract award.

2. Only staff that shall utilize the platform to be granted access. Examples: Project manager, sub-contractors POC, Site manager, Safety officer, etc.

3. The access request shall be in writing and include a list of staff. The list shall include the following information:

b) Full Name

c) Company Name

d) Email Address

e) Role/Position on the project (i.e., Project manager, site super)

4. Upon granting access, staff shall complete required ACC training through ProductivityNOW platform within 12 Calendar days.

5. Upon successful completion of training, contractor shall submit certificates of completion to COR NLT 2 business days.

1. Access to ProductivityNOW eLearning will expire after 12 Calendar days after online access is granted. Contractor shall complete ACC training within that period.

1. Additional Staff and Subcontractors can be added at any time with a request submission to the project COR as described above.

1. The contractor shall only use the ACC platform for contract required submissions, official project correspondence to be acknowledged, reviewed, and actioned by the responsible party. No additional time shall be added to the contract, nor an increase in contract amount be provided for the contractor’s failure to utilize the ACC platform as the project’s official communication and collaboration system. Any correspondence out of platform shall not be the governing authority contradicting direction and will be at the contractor’s expense. Official project correspondence and collaboration includes but not limited to: RFIs, submittals, schedules, shutdown requests, actionable tasks, reports, testing, safety inspections, photos, and site surveys.

1. Contractor must inform the COR of any staff changes NLT 2 business days from the change. Staff changes pertains to staff who was granted access to the ACC platform. Contractor shall request termination of access, replacement of personnel and/or any other action that might impact the contractor ability to maintain required utilization of the platform.

1. Contractor submission requirements cannot be accepted for work to begin without meeting all ACC Platform requirements outlined herein, including completing required ACC platform training.

ADMINISTRATION:

1. Accident Reporting: In the event an accident occurs of Government personnel or property, the Contractor shall provide a report to the Contracting Officer and COR in writing that shall include the following: (1) the time and date of occurrence; (2) the place of occurrence; (3) a list of personnel directly involved; and (4) a narrative or description of the accident to include chronological order of the accident and circumstances; (5) corrective action to prevent future occurrences.

d. Federal Holidays: Federal law (5 U.S.C. 6103) establishes the public holidays. Please note that most Federal employees work on a Monday through Friday schedule. For these employees, when a holiday falls on a non-workday -- Saturday or Sunday -- the holiday usually is observed on Monday (if the holiday falls on Sunday) or Friday (if the holiday falls on Saturday). Federal holidays include: New Year’s Day, Martin Luther King Jr. Day, President’s Day, Memorial Day, Juneteenth, Independence Day, Labor Day, Columbus Day, Veteran’s Day, Thanksgiving, and Christmas.

e. Invoice: Payment will be made upon receipt of a properly prepared, itemized invoice, validated by the COR, and submitted through the Tungsten Network. A properly prepared invoice will resemble the contract line items reflected in the Price/Cost Schedule and contain:

1. Invoice Number and Date

1. Contractor’s Name and Address

1. Accurate Purchase Order Number

1. Dates service performed.

1. Location of service performed.

1. Total amount due