Attachment 1 692-23-104 Retrofit HVAC in 4 bldgs-SOW.pdf

White City VA Medical Center White City, OR

Replace and Add HVAC System Project 692-23-104

STATEMENT OF WORK

692-23-104

Retrofit HVAC in Four Buildings

SCOPE of WORK

This project includes the following, as well as statements listed in the specification. Unless otherwise specified, all brand names listed are brand name or equal to requirements. All replacement air handling units will meet or exceed the requirements of the TAB, (Testing and Balance), that is required prior to removal of subject equipment.

1) Building 201A , Remove and replace with new: Hydronic Pumps , piping, valves, insulation and other appurtenances for the chiller system as located from the Heating Ventilation Air Conditioning (HVAC) unit in the basement of the subject building to and including, the Chillers outside located to the North of the subject building.

2) Building 201 Connecting Corridor, Remove and replace with new, five HVAC units on the roof of the subject building. The existing units are Carrier brand with the following information: (contractor to verify )

a. Model 50HJ 007 541CA , Serial 3004G40395

b. Model 50HJ 006 531 , Serial 3504G20313

c. Model 50GX 030 511 , Serial 3804G12829

d. Model 50HJ 006 531 , Serial 3504G20315

e. Model 50GX 030 501 , Serial 3104G10799

3) Building 201, Remove and replace with new the existing HVAC unit located off the catwalk from building 201 CC. The existing unit is : (contractor to verify )

a. Trane brand, Model BTC 130G300CA , Serial S32143655D

4) Building 212, Remove and replace with new, two condenser units located on the ground, on the Northwest side of the subject building. Also remove and replace with new, ( and to connect to the subject condensers ), two Air Handler Units (AHU) located inside Building 212 Lower North, in rooms room 104 and room 114.

The existing condenser units are: (contractor to verify)

a. Aaron Coil Products , Model CB B 060 2 F 1 , Serial 200810CDCF00582

b. Lennox , Model HP29 048 2P , Serial 5900H09892

The existing Air Handling Units are: (contractor to verify)

a. Lennox, Model CB17 95V 1 , Serial 5484E 04082

b. AAON, Model F1 A 060 !V 0 B0000000 A0, Serial 200810 CARR 00225

Replace and Add HVAC System

LOCATION PLAN

Facility Plan (southwest quadrant) – Not to Scale

All subject work located at VA Southern Oregon Rehabilitation Center & Clinics (SORCC), 8495 Crater Lake Highway, White City, OR

WHITE ROAD

AVENUE "N"

s t A v e

V E

T E

R A

N S

M E

M O

R

IA

L D

R

IV

E

PARKING

LOT "O"

PARKING

LOT "G"

P A

R K

IN

G

L

O T

D

211A

C

T

201A

218A

217A

215A

216A Chiller piping in basement

B212 outdoor units

Room 104 (~6’x 5’6”)

Room 114 (~5’x 5’6”)

5 roof top units

Roof top unit

Replace and Add HVAC System

SUMMARY OF WORK

BUILDING 201a

1) Provide the labor and materials necessary to remove and replace existing chilled water, hydronic pumps, air separators, valves and other appurtenances located in the mechanical room basement of building 201a to the chillers located outside. Remove existing Iron piping and replace with copper complete from HVAC in basement to chillers outside except earth-buried piping.

2) Provide drain down of the chilled water traveling inside the building and flushing of the piping systems until clean prior to demolition.

3) Provide electrical disconnects for hydronic pumps and control valves and re-connecting to new pumps and control valves included and coordinated with Johnson Controls International (JCI).

4) New pumps, variable frequency drives ( VFD), piping, equipment and appurtenances shall match sizes and types, and match or exceed performance from items, currently installed in system.

5) New chilled water piping to be COPPER , “ type K or L “.,

6) Add anti corrosive gel to new Chilled Water Supply and Return piping that will receive insulation to protect existing pipe integrity

7) Provide and install elastomeric insulation for chilled water piping, fittings and equipment with markings as currently exist.

8) New pumps will include fabricated and removable insulated blankets.

9) Provide full balancing of new 201A hydronic piping system and pumps.

10) Utilize appropriate cleaning HVAC techniques for new copper piping before chiller pre start up.

Replace appropriate cooling fluids traveling inside the building before chiller pre-start up.

11) Utilize de mineralized water with 30% propylene glycol for chilled water system.

B 201a Chiller to HVAC B 201a Chiller to outside B201A Basement B201A Appurtenances

Replace and Add HVAC System

Building 201a Chiller and Dry chiller View from Building 201a to Chillers

Building 201 Connecting Corridor

1) Building 201 CC, remove and replace with new the five HVAC units on the roof of the subject building. The units are AHU 1, AHU 2, AHU 3, AHU 4, and AHU 5.

2) Before removal and replacement of these physical units a very thorough Action Plan/Activity Hazard Analyses will be provided to the VA at least 20 business days before, and the work should be planned for weekend/after hours.

3) Coordinate anchorage of the new units to the roof with VA CO and COR concerning seismic considerations.

4) Interfaces with existing ductwork shall be complete, sound, secure and free of leaks. Route and hook up new plumbing to existing piping interface.

5) Disconnect controls, thermostats and sensors from existing unit and reconnect to new unit. New units should utilize Direct Digital Controls (DDC) .

6) Replace and move current electrical power disconnect at the units. Reconnect existing power to unit. Provide new electric conduit and feed and fire alarm to unit.

7) Commission new units and train VA operations and maintenance personnel on unit operations and maintenance.

8) Any disturbed roofing membrane shall be repaired with PVC/TPO, white, 50-60 mil thickness.

B 201 CC Roof showing Five units

Replace and Add HVAC System

B 201 CC Roof showing Five units ground view

B 201 CC Unit 1 on roof B 201 CC Unit TWO on roof

B 201 CC Unit TWO on roof B 201 CC Unit FOUR on roof

B 201 CC HVAC unit 5 B 201 CC HVAC unit 3

Replace and Add HVAC System

Building 201

1) Building 201 remove and replace the existing HVAC unit located off the catwalk with a new unit.

2) Before removal and replacement of the physical unit a very thorough Action Plan/Activity Hazard

Analyses will be provided to the VA 20 business days before, and the work should be planned for weekend/after hours

3) Coordinate anchorage of the new unit to the roof with VA CO and COR concerning seismic considerations.

4) Finished interfaces with existing ductwork shall be complete, sound, secure, and free of leaks.

Route and hook up new plumbing to existing piping interface.

5) Disconnect controls, stats and sensors from existing unit and reconnect to new unit. New units should utilize Direct Digital Controls (DDC) .

6) Replace and move current electrical power disconnect at the units. Reconnect existing power to unit. Provide new electric conduit and feed and fire alarm to unit.

7) Commission unit and train VA operations and maintenance personnel on new unit operations and maintenance processes.

8) Any disturbed roofing membrane shall be repaired with PVC/TPO, white, 50-60 mil thickness.

View of Catwalk from Building 201 CC to B 201 Roof HVAC ( please note catwalk not designed for construction loads)

Replace and Add HVAC System

Building 201 AHU unit located off of catwalk from building 201 CC

B 201 AHU picture facing West

B 201 picture facing East

Building 212

1) Building 212 remove and replace two condenser units located on the ground, on the Northwest side of the subject building. Also remove and replace, ( and to connect to the subject condensers ), two Air Handler Units located inside Building 212 Lower North, in rooms room 104 and room

114. Place the two new condensers on the existing concrete pad or new pad’s as appropriate according to the manufacturer instructions of the condenser item the contractor purchases.

2) Disconnect controls, thermostats, and sensors from existing units and reconnect to new units.

Replace and Add HVAC System

New units should utilize Direct Digital Controls (DDC) .

3) Locate new condensers in accordance with manufacturer’s clearance and air flow requirements.

4) Route and hook up new plumbing to existing chilled water piping interface. Interface to existing components shall be complete, sound, secure and leak free. Remove and replace all line-sets from end to end.

5) Coordinate anchorage of the new condensers and AHU’s with COR concerning seismic considerations.

6) Rebalance existing pump and flow. Provide new DDC controls at multi-zone unit supply fan.

7) Commission unit and train VA operations and maintenance personnel on new unit operations and maintenance processes.

8) Existing steam pipe in R104 and R114 will not be removed or replaced.

B 212 Lower North Two Condensers West side AAON Air Handling Unit Lennox Air Handling Unit

INTERIOR PARAMETERS

1) At no time will the corridor’s in any subject building be blocked or made narrower than 5 feet wide, especially during weekdays from 7:30a to 5:00p.

2) See specifications for use of elevators.

CONTROLS

1) Controls for each new HVAC system shall be DDC, tied to and compatible with the existing BacNET system (Metasys) with the following controls as a minimum:

a) Temperature Control

b) Humidity Status and Control

c) Supply Air Temperature

d) Return Air Temperature

e) Outside Air Temperature

f) Statuses of all Filters

g) Statuses and Control for all Dampers

h) Statuses for all Fans

i) Setpoint reset

EXTERIOR CONDITIONS

1) Geotechnical conditions at VA SORCC are challenging. During dry periods with inactive irrigation, the top layer (up to 2 feet) can be hard clay. During inclement weather or any

Replace and Add HVAC System condition introducing moisture (irrigation, standing water or other scenarios), the top layer can be mucky and sticky. Below the top layer, a layer of cobbles (sometimes “cemented”) persists at most locations throughout the facility, to an unknown depth. Standing water at 2 to 5 feet below surface is not unusual. Means, methods and sequencing of dealing with these conditions are by the Contractor.

SCOPE of WORK GENERAL Requirements

1) The Contractor shall provide all labor, materials and equipment for the demolition, construction, testing of equipment, and post construction services needed to complete the project. The Contractor shall purchase and provide for removal and installation services of subject HVAC units and components, controls and appurtenances defined herein , including provisions of existing power to all components. All work shall be performed in accordance with this statement of work, references, and VA specifications. If the Contractor has the perception that the Statement of Work and Specifications differ, contractor to provide a Request for Information (RFI), that details the perception, and states how the contractor wants to proceed including any cost implications.

2) All Contractor and subcontractor owners and employees shall adhere to all the White City, (SORCC), VA security and safety requirements while on site. One of which is a submittal stating all contractor employees and subcontractors have been TB tested.

One SORCC safety requirement is the Lock Out Tag Out additions which are available in SORCC FMS safety.

3) The Contractor shall have an authorized representative on site at all times during project construction. The authorized representative shall have the authority to receive instruction from the Government and direct the actions of Contractor employees and all subcontractors.

The Contractor will provide the name of this authorized representative to the VA contracting officer and COR, and any changes will be approved by the VA contracting officer and COR.

The authorized representative will have completed the Occupational Safety & Health Administration (OSHA) approved 30-hour construction safety training, and all employees and subcontractors will have completed the 10-hour construction safety training, and copies of these must be submitted to the contracting officer and COR before any work is initiated.

4) All controls, sensors, thermostats and other appurtenances not intended for replacement shall be reconnected. All controls associated with components and systems receiving work shall be correctly installed, tested, and those and their systems balanced.

5) Reference VA HVAC Design Manual, revision August 1, 2023, paragraph 2.8.1.3, since this is a renovation project with a requirement to reuse existing HVAC systems and/or equipment components, a pre equipment remove TAB, Testing and Balance, report is required. The contractor will retain the services of AABC, TABB, or NEBB certified TAB company to perform this TAB. This pre equipment remove TAB will performance test the systems and/or equipment to be reused to establish a baseline for the replacement equipment TAB parameters. So Testing and Balance (TAB), is required before the subject equipment is removed and after the new equipment is installed. To be significant the testing shall be accomplished under simulated full load conditions and shall include as applicable the following: (a) Full air flow CFM and system static pressure profile on ducts and fans (including air handling units) to be reused. On variable air systems this test shall include indexing all VAV terminals to full

Replace and Add HVAC System cooling. (b) Estimate of duct leakage based on comparison of flow measured at air devices versus flow measured by duct traverses at the fan or air handling unit. (c) Total chilled water and heating water flow with all control valves indexed to full heating and or full cooling as applicable. Provide flow measurement and system pressure profile at the pumps, chillers, hot water boilers, etc. Measurement must be taken with calibrated devices and instruments either provided by the vendor or through confirmation of the accuracy of the VHA installed system instrumentation. (d) Condenser water flow measurement and pressure profiles at pumps, chillers and cooling towers. Measurement must be taken with calibrated devices and instruments either provided by the vendor or through confirmation of the accuracy of the VHA installed system instrumentation.

6) Contractor will provide a comprehensive schedule at the start of the contract and every month thereafter. This comprehensive schedule will include a critical path methodology incorporated within. The contractor will notify the CO/COR 20 business days before an item will be pre-tested or final tested, and provide all appropriate pre-test and testing documentation related to the item as part of that subject final test notification.

7) The contractor will also provide a schedule of values at the start of the contract, as a submittal for approval, to mirror contractor proposed payment requests.

8) Johnson Controls (JCI) is the BACnet system at the White City VA All component shall be fully compatible with and be integrated into the facility’s existing Johnson Controls Metasys/DDC Control System. Control sequences and set points for systems receiving work in whole or in part shall be coordinated with and to the satisfaction of the White City FMS facility staff responsible for system maintenance and operation.

9) Crane plans/Lift plans will be necessary for work that requires a crane. The lift plan will include but not be limited to:

1) Brief description and sketch for crane set up

2) Lift computations

3) Evaluation of “ground conditions”, the ability of the ground to support the equipment, ( including slope, compaction, and firmness).

4) Signals

5) Work area controls

6) Measures to prevent workers from being in the lift zone. Only essential workers are allowed in the lift zone but not under the load.

7) Controls to prevent the public from entering the lift zone

8) Identify the operator, lift director, or competent person who inspected the equipment.

10) The building the work is located in, or the building that the crane must reach over, shall not be occupied in the vicinity of the subject task area when a crane is in operation. For this project the crane operator will utilize dual signal methods to ensure adequate communication, so that any one signal is not compromised or interrupted, to move the subject equipment off and on the building. The signals used

Replace and Add HVAC System or the means of transmitting the signals, (line of sight, video, radio, etc.) will be appropriate to the site conditions and coordinated with the COR. Also please see exterior conditions before preparing to operate the crane.

11) In accordance with the VA HVAC design manual, rev 1 August 2023, paragraph 1.1 General: the HVAC system(s) shall be:

a) Technically correct, complete, and coordinated.

b) In compliance with all applicable codes and safety standards such as:

Department of Veterans Affairs (VA) HVAC Design Manual for New, Replacement, Addition, and Renovation of Existing VA Facilities. Current National Codes and Standards. VA Specifications.

c) Easily accessible for repairs and maintenance, to the extent possible given that components are part of a retrofit.

d) Energy efficient

e) In compliance with prescribed noise and vibration levels.

12) All penetrations through floors, ceilings and fire barriers shall be coordinated with the COR a minimum of 21 business days in advance of the installation. A fire barrier penetration permit must be secured through the facility safety department, ( 21 business days), prior to disturbing the integrity of the barrier. The permit must be available for inspection at the subject location.

13) This project will employ commissioning practices tailored to the size and complexity of the building and its system components in order to verify performance of building components and systems. The Commissioning effort will include, but not be limited to the following systems:

a) Noise and Vibration control

b) Direct Digital Control System

c) Chilled Water System

d) Condenser Water System

e) Steam/heating hot wat system

f) HVAC Air Handling Systems

g) HVAC Ventilation/Exhaust systems

h) Hydronic Distribution Systems

i) Testing and Balance (TAB)

14) The Commissioning effort for the appropriate systems will include but not be limited to:

j) Commissioning Plan (tailored to size and complexity of project)

k) Progress minutes as part of weekly,( or every two week), project management meeting

l) Equipment/system Start up

m) Pre-functional checklist

n) Preliminary system functional performance test procedures

o) Systems functional testing Procedures

p) Acceptance and testing of systems

q) Final Commissioning Report

15) This Scope of Work is a companion to a Specifications Package.

16) Material and equipment shall be the standard products of a manufacturer regularly engaged in the manufacture of the products for at least 5 years. The design, model and size of each item shall have been in satisfactory and efficient operation on at least five installations for approximately three years. However, digital electronics devices, software

Replace and Add HVAC System and systems such as controls, instruments and associated appurtenances shall be the current generation of technology with a proven track record of at least three years, and which is compatible with the VA existing BacNET system.

17) Products and systems installed within this project shall have authorized factory providers of service and parts within a radius of 100 miles.

18) The use of VA provided information does not relieve the contractor from their legal and ethical obligations to VA HVAC Design Manual, latest revision. Contractor also required to research additional information when the VA provided documents are insufficient for the project at hand.

19) The Contractor shall participate in a pre-construction meeting. Subsequent weekly meetings will occur during construction. For each meeting, the Contractor will take minutes and provide those minutes to the attendees and parties involved. Action items will be assigned and tracked at each meeting. The minutes shall contain the following components as a minimum:

a) Attendees.

b) Three week look ahead schedule.

c) Safety and Security.

d) Submittal Log.

e) RFI Log.

f) Issues Log.

20) The Contractor shall contain all ozone depleting substances and other materials that would cause harm to the environment, and account for those materials being recycled.

The Contractor shall participate in the VA’s Green Environment Management System (GEMS). A waste/recycle manifest shall be provided to the COR by the Contractor.

21) Information, including drawings, site drawings of the White City VA facility, and other documentation provided to the Contractor by the VA shall be used for reference only. The Contractor shall field verify all dimensions and existing conditions prior to construction or fabrication. The contractor will field verify the location of all utility connections before work is started.

22) Submit cut sheets for all piping, insulation, equipment, controls, sensors, thermostats and other appurtenances to the COR for review not less than 20 business days prior to construction. Prior to submitting documents and shop drawings for VA acceptance, contractor shall certify in writing that manufacturers of all major items of equipment have been jointly coordinated and have properly integrated their equipment and controls to provide a complete and efficient installation. Submittals shall be categorized into logical groups associated with their function and interdependency, with the intended product(s) clearly delineated by highlighting, underlining or similar means. P u r c h a s e o f physical items requiring submittal shall be pending the Contractor receiving each submittal back from the COR marked as ‘Accepted’. Submittals marked other than “ Accepted” will be changed and resubmitted.

23) The Contractor shall provide Action Plans/Activity Hazard Analyses(AHA), to the COR not less than 21 business days, including review and approval by the COR, in advance of installation/removal work. A separate Action Plan and AHA for each HVAC unit and its

Replace and Add HVAC System associated components shall be provided; refer to attached Asbestos survey (2019) for B210, B210A, B212. For equipment mounted above grade level, a safety and lift plan shall also be provided. The Action Plan provides a narrative and timeline for the subject AHA.

The Action Plan must include relevant information such as proposed work schedule, area of work, description of work, names of supervisor and qualified person performing the work, equipment to be used, procedures to be used, safety equipment to be used, and exit pathways.

24) Equipment and material placed on the job site shall remain in the custody of the Contractor until phased acceptance, whether or not the Government has reimbursed the Contractor for the equipment and material. The Contractor is solely responsible for the protection of such equipment and material against any damage.

25) Site and building areas associated with the work shall be protected from damage. All damage caused by the contractor and persons/conditions under his control and/or supervision shall be repaired to pre-damaged conditions at no expense to the government.

26) When Life Safety is impacted, the Contractor shall follow VA interim life safety measures

(ILSM) and posting requirements.

27) The Contractor shall follow all VA infection control (and dust control) measures and posting requirements. SORCC has implemented a process of measures required by the Contractor prior to the use of any equipment and actions generating fumes.

28) Where/if work involves existing refrigerant-carrying components to remain in conjunction with the use of new and replacement components, those existing components shall be thoroughly flushed of the previous refrigerant, oils, fluids and contaminants comprising of the previous refrigerant system. The result shall be that the system(s) only contains the new compliant refrigerant and its compatibles.

29) Submit operation and maintenance manuals (O&M Manuals) for all components that were a part of the work 30 calendar days before final contract date as scheduled

30) Register all available and applicable manufacturer and service warranties under this project, and perform all procedures and notifications necessary to put the maximum applicable warranties into effect. The Contractor shall pass thru to the VA all available manufacturers warranties. Include completed copies of product registration and equipment and service warranties in the respective O&M Manuals.

31) The contractor shall coordinate and schedule the work at each location with the COR as part of each AHA, especially concerning weekend work requests. The contractor will NOT PLAN to start work at each different location of the project before the proceeding location is complete, (complete is defined as substantial completion/acceptance by the VA), unless coordinated with the COR.

Replace and Add HVAC System

1) QUALIFICATIONS

Persons performing installation work of HVAC, plumbing, electrical, electronics and controls shall have a minimum of 3 years of work experience and be qualified specialists under the applicable standards for the respective trade, in the types of work required for this project.

Persons performing troubleshooting work of HVAC, plumbing, electrical, electronics and controls shall have a minimum of 5 years of work experience and be qualified specialists under the applicable standards for the respective trade, in the types of work required for this project.

2) PERIOD OF SERVICE and SCHEDULE

The Period of Performance for this project shall be 301 calendars days. All required submittals including Schedule and Schedule of Values must be provided and receive final acceptance by the VA before the contractor can proceed with mobilization or any equipment purchases.