Attachment A 649-18-105 Bid Set Narratives.pdf

VA PROJECT NUMBER

PROJECT NAME

649-18-102 (1395.29) Replace Hospital (Building 107) Electrical Service

SUBMITTAL Bid Documents SUBJECT Architectural Narrative

Architectural 1

Project Background The original hospital was built in 1931, in Prescott, AZ. However, in 1980, "SES-107" was replaced. "SES- 107" is approximately 32 years old. With the life expectancy of electrical equipment rated for 25 years, "SES-107" has exceeded its life span. Additionally, replacement parts and circuit breakers are no longer readily available. The upgraded cabinet was installed in front of the old existing cabinet using the existing cabinet as a pull/splice box for the existing feeders. The existing "DB-107" is approximately 27 years old. With the life expectancy for electrical equipment rated for 25 years, this distribution board has exceeded its life expectancy. The down-stream circuit breakers feeders exit the distribution cabinet through the cabinet of the "SES-107". This is in violation of the current National Electric Code (NEC).

Multiple modifications and upgrades took place over the years that are also not up to current

NEC Standards or VA Standards.

Project Overview The proposal received from the NAVAHCS calls for the relocation of main distribution switchboard SES-107 and existing transformers PM4 and PM5 will be replaced and relocated as follows:

• SES-107 will be replaced and relocated to Building 107 Room 016. The initial sizing of equipment and clearances provided by Room 016 will require a second means of egress out of this room. It is the intent to remove the existing Mechanical thru wall equipment in the Southeast corner of the room and provide a new exit in that location.

The existing door from the adjacent room is 6’-4” tall so a taller opening will need to be cut allowing a 7’-0” door to be placed in this location. Existing Utility Piping in Room

016 will need to be relocated so they are not directly above new switchgear. Refer to all other narratives for more detailed information on their specific scopes.

• PM4 and PM5 will be replaced and relocated near PM 17 on the southern end of the courtyard. New feeders are to run deep enough to allow for new building foundations proposed for infilling the existing courtyard (at least 24”). The original intent was to enclose within a blast screen wall system per PSRDM 6.6 the new Transformers.

However, after looking at all the Physical Security requirements, it was agreed that

649-18-102 (1395.29) Replace Hospital (Building 107) Electrical Service

Architectural 2 providing a secure entrance into the courtyard would be a better and more cost-effective option. See the updated “AE Physical Security Risk Mitigation Design Guidance-

Prescott 649-18-105- Replace B107 Electric” Report included in this package.

• Existing underground primary transformer feeders will be intercepted and extended as needed.

• New distribution feeders will be routed directly to new SES-107 and the Essential

Emergency System Distribution Board(s).

• Design includes replacement of all secondary feeders from new SES and emergency

ATS to first panel boards.

• Design will include all work required to relocate existing utilities and equipment impacted by the relocations.

• PM14 and RAD-l07 are no longer needed due to the relocation of the Radiology department. Design will include removal and disposal of this equipment.

• The roof mounted MCC-2 service will continue to be fed from PM17.

• Design will include disposal of all items replaced or removed from service.

• Phasing is critical and will be complex, so coordination with the VA is required during demolition and construction.

• Drawings will indicate that new grounding rods will be provided as part of the current

EHRM project. Location of these will be noted on the Drawings, but Contractor will need to coordinate with VA once they are installed.

• It was determined to use a triple authentication gate arm and anti-ram bollards at the main entrance to the courtyard area to protect the new electrical transformers as well as the existing electrical and mechanical equipment in leu of blast proof walls around the new electrical transformers.

After our initial site visit it was determined the installation of the electrical equipment in this location requires some interior modifications. The following items are shown on our architectural drawings

• New interior wall and access door to separate this space from the crawlspace to the south.

• Remove existing 3’-0” x 6’-0” door frame between rooms 014 and 016 and replace with new 3’-0” x 7’-0” door and frame

649-18-102 (1395.29) Replace Hospital (Building 107) Electrical Service

Architectural 3

• Remove existing mechanical unit in existing window and replace with new blast rated exit door on west side of room. This will provide a second means of egress from this space.

Construction Phasing The project’s successful completion is dependent upon a coordinated phasing plan which permits the construction to proceed in an efficient and orderly manner, allowing VA staff to perform their duties with minimal disruption. Work must be phased, so the facilities are still able to operate while this work is being performed.

Ultimately, the precise sequence will be determined after a contractor has been selected and consultations among the hospital staff, facilities personnel, contractor, and architect/ engineer can be arranged. A staging plan will be prepared by the contractor for construction materials, contractor and material access, engineering staff access, and clean up. All work must be performed while allowing the necessary normal operating access around the building.

VA Planning, Design and Construction Criteria PG-18-1 Master Construction Specifications PG-18-3 Design & Construction Procedures PG-18-4 Standard Details and CAD Standards PG-18-5 Equipment Guide List PG-18-9 Space Planning Criteria, and VA-Space & Equipment Planning System (VA-

SEPS)

PG-18-10 Design Manuals (by disciplines) PG-18-12 Design Guides (graphical, by function) PG-18-13 VA Barrier Free Design Standard (Supplement to the ABA) PG-18-14 Room Finishes, Door, and Hardware Schedule PG-18-15 A/E Submission Requirements, Vol. C PG-18-17 Environmental Guidance NFPA National Fire Codes NFPA 10 Standard for Portable Fire Extinguishers NFPA 13 Standard for the Installation of Sprinkler Systems NFPA 70 National Electric Code NFPA 72 National Fire Alarm and Signaling Code NFPA 90A Standard for the Installation of Air Conditioning and Ventilating Systems NFPA 99 Health Care Facilities Code NFPA 101 Life Safety Code

649-18-102 (1395.29) Replace Hospital (Building 107) Electrical Service

Architectural 4

NFPA 241 Standard for Safeguarding Construction, Alteration and Demolition Operations

IBC International Building Code IPC International Plumbing Code ASHRAE Fundamentals Handbook ABA Architectural Barriers Act (ABA) Standards

649-18-102 (1395.29) Replace Hospital (Building 107) Electrical Service

SUBJECT Civil Narrative

Civil-1

Project Overview and Background Overall Project Summary

The project involves the replacement of the existing electrical service, new site electrical equipment, new concrete sidewalk with ADA ramps and new PSRDM triple authentication security gate and anti-ram bollards.

Circulation Study

Vehicular traffic patterns will be affected during the trenching for the new electrical feeders.

The contractor should phase the trenching and pavement removal to maintain access to all portions of the building during construction. Traffic patterns will remain unchanged in the proposed conditions.

The staging area should be coordinated directly with the VA COR to determine the best location that meets the project’s requirements. Two suggested locations for the contractor staging area are to the west of the loading area and within the parking area north of Colonel

Holmberg Road.

Phasing Analysis

The contractor will need to phase the demolition and construction of the new electrical duct bank. Portions of the trench should be fully demoed, conduit installed and new concrete pavement poured prior to beginning on the next phase.

Parking Analysis

No existing parking spaces will be affected by the proposed construction.

Storm Drainage

No new storm sewer or modifications to existing storm sewer are expected as a part of this project.

649-18-102 (1395.29) Replace Hospital (Building 107) Electrical Service

SUBJECT Civil Narrative

Civil-2

Utilities

No new sanitary sewer utilities are expected to be part of the project’s scope. The new electrical feeders will cross the existing 8-inch sanitary sewer in two locations. The existing sanitary sewer is approximately 4-ft deep and will need to be protected throughout construction. The contractor should complete exploratory excavations to locate the sanitary on site prior to starting construction of the electrical duct bank.

Codes and Standards The anticipated and applicable codes and standards for this project are as follows:

1. VA Planning, Design and Construction Criteria

a. PG-18-1, VA Master Construction Specifications

b. PG-18-3, Design and Construction Procedures

c. PG-18-10, Design Manuals (by discipline)

d. PG-18-12, Design Guides (graphical, by function)

2. Internal Code Council (ICC)

a. 2021 International Building Code (IBC 2021)

b. 2021 International Existing Building Code (IEBC 2021)

3. American Society of Civil Engineers (ASCE)

a. ASCE 7-16, Minimum Design Loads and Associated Criteria for Buildings and

Other Structures

4. American Concrete Institute (ACI)

a. ACI 318-14, Building Code Requirements for Structural Concrete

5. VA Physical Security & Resiliency Design Manual 2020 (1 Sep 21 Revision)

649-18-102 (Spur #1395.29) Replace Hospital (Building 107) Electrical Service

SUBJECT Electrical Narrative

Electrical-1

DIVISION 26 ELECTRICAL

GENERAL

The following is a summary of the electrical scope of work:

1. Replace the existing pad-mounted transformers “PM-4” and “PM-5”, as well as the main, normal-power electrical distribution switchboard “SES-107” located behind Building 107.

2. Re-feed the existing, normal-power branch circuits from the new main switchboard.

3. Remove the existing, pad-mounted transformer “PM-14”, panel “RAD-107”, and feeders previously serving the hospital CT and MRI.

4. Maintain “PM-17” and the roof mounted motor control center “MCC-2”.

5. Provide new electrical distribution equipment to replace the existing equipment on the raised platform. All new equipment shall be placed in Building 107, room 016.

6. Re-feed all existing loads (panelboards, ATSs, individual loads) currently fed directly from SES-107.

7. Re-feed essential power distribution boards or panels downstream of the re-fed ATSs.

8. Due to vehicle screening being introduced, rerouted buried utilities will be exempt from blast protection per PSRDM 7.2.5. See “AE Physical Security Risk Mitigation Design Guidance Prescott 649-18-102 Replace B107 Electric” report included in this narrative set.

9. Provide power and data to new security gate on site.

ELECTRICAL CODES AND STANDARDS

A. Architectural Barriers Act (ABA) Standards 2015 B. VA PG-18-13 VA Barrier Free Design Standard 2018 (Supplement to ABA Standards) C. ASHRAE Standard 90.1-2019 – Energy Standard for Buildings except Low Rise

Residential Buildings D. IBC 2021 – International Building Code E. IEBC 2021 – International Existing Building Code F. IECC 2021 – International Energy Conservation Code G. JCAHO EC 7.40 – Emergency Electrical Power System Inspection, Maintenance, and

Testing H. NFPA 70-2020 - National Electrical Code (NEC) I. NFPA 99-2021 – Health Care Facilities Code J. NFPA 101-2021 – Life Safety Code K. NFPA 110-2022 – Standard for Emergency and Standby Power Systems L. VA PG-18-10 Electrical Design Manual, December 2019 M. VA H-18-8 Seismic Design Requirements N. VA Physical Security & Resiliency Design Manual 2020 (1 Sep 21 Revision)

ELECTRICAL DEMOLITION

Demolition of electrical work will include:

649-18-102 (Spur #1395.29) Replace Hospital (Building 107) Electrical Service

Electrical-2

1. Removal of existing building service transformers “PM-4” and “PM-5”, electrical switchboard “SES-107, unused transformer “PM-14”, and unused panel “RAD-107”.

2. Removal of all primary and secondary conduits and feeders for “PM-4”, “PM-5”, and

“PM-14”.

3. Removal of all secondary feeders from “SES-107” to downstream loads.

4. Removal of all secondary feeders from existing ATS’s to their first downstream board, panel, or load.

5. Relocation of existing panels “107-BCX-3” and “107-BCX-4A” and miscellaneous other existing conduit necessary for proper clearances of the new distribution panel “SES- 107” in Building 107, room 016.

SITE POWER DISTRIBUTION SYSTEMS

1. Switchboard Replacement:

A. Building 107 is currently fed from two outdoor, pad-mounted transformers (PM-4 and PM-5) in a main-tie-main configuration with switchboard SES-107. The existing equipment layout and electrical one-line diagram can be seen in appendix A.

B. The existing main-tie-main switchboard configuration has been reviewed against the NEC and VA Electrical Design Manual to determine if the main-tie-main configuration is required in a new switchboard. Based on the NEC and VA Electrical Design Manual, the main-tie-main configuration is not required, as there is a building emergency generator that supplies power to the essential electrical system in the building.

C. The NEC requires that a hospital or health care facility have two independent sources of power: one for the normal service and one for the essential electrical distribution when the normal source is not available. For Building 107, this can be achieved with a single pad-mounted transformer and the existing emergency generator that currently serves the existing life safety, critical, and equipment branches in the hospital. The overall goal for serving hospital and health care facilities is to avoid having a single point of failure of the electrical system serving patient care areas.

D. Existing panelboards 107-BCX-4 and 107-BCX-4(A) will be demolished to make room for the new main switchboard being newly located inside room 016. All existing loads in this panel will be consolidated onto one new panelboard of the same name. The new panel will be placed on a new wall in the room.

E. Minimum required clearance between front planes of panels and switchboard is 36” [NEC Table 110.26(A)(1) Condition 3 for systems 120V line-to-ground].

F. Switchboards of 1200A or greater and more than 6’-0” in length are required to have one means of egress at each end of the working space for a total of two.

Engineers will take advantage of exception presented for doubling the working space between live front assemblies [NEC §110.26(C)(2)(b) Extra Working Space]. This makes the clearance requirement 72”, which is estimate to be exceeded with approximately 81” between equipment. Engineer is currently

649-18-102 (Spur #1395.29) Replace Hospital (Building 107) Electrical Service

Electrical-3 planning to include the additional means of egress to meet code and to allow for future maintenance on electrical equipment.

G. A single pad-mounted transformer with dual primary connections will be integrated with the existing campus loop to serve Building 107. The following items are important to note:

i. The NAVAHCS campus currently has a single campus standby generator to supply power in the event of loss of power from either or both of the public utility campus connections. It is unknown by Spur Design if there is the ability to connect a mobile generator into the system. Modifications for this variance are not part of the project scope of work.

ii. Building 107 does not have N+1 redundancy of the building essential electrical system (emergency) generator. The existing emergency switchboard does have a spare circuit breaker where a mobile generator or additional generator could be connected into the system. Modifications for this variance are not part of the project scope of work.

iii. The proposed new switchboard does not have draw-out, low-voltage circuit breakers. This variance needs to be discussed with the VA. The VA topology shows this arrangement as a possible arrangement, but no other VA standards are known to require the use of draw-out, low-voltage circuit breakers. The use of draw-out, low-voltage circuit breakers will require larger electrical distribution equipment to be installed in a space that is larger than room 016, which is not readily available, but could be provided as an addition. Draw-out circuit breakers would also increase the cost of the new switchboard. Spur Design recommends the use of standard low-voltage circuit breakers to keep the cost of the project within a reasonable budget.

iv. The dual feeds to the pad-mounted transformer should be kept in separate duct banks and manholes. If both feeds route back to the same manhole, additional construction cost will be required to separate these into separate manhole feeds.

v. Upon approval of Deviation to the AHJ, exterior transformers will be surrounded by anti-ram and covered by trespass analytics SSTV in lieu of a blast screen wall system. See “AE Physical Security Risk Mitigation Design Guidance Prescott 649-18-102 Replace B107 Electric” report included in this narrative set.

2. Main Normal Power Distribution Switchboard SES-107 Replacement:

A. The proposed switchboard will be fed from a single, new, pad-mounted transformer “PM-4” located at grade level in the existing service yard located between Buildings 160 and 162. This transformer will serve the new, normal-power switchboard “SES-107”. Refer to the drawings for the proposed electrical one-line diagram. This transformer will also have a separate service entrance feed to an 800A fused disconnect switch on the exterior of the building to properly feed the fire pump’s automatic transfer switch. Per the NEC, fire pumps

649-18-102 (Spur #1395.29) Replace Hospital (Building 107) Electrical Service

Electrical-4 are required to be tapped off ahead of building main service disconnecting means. The current feed to the fire pump within the main-tie-main downstream distribution is only allowed if all of the main-tie-main circuit breakers operate in the closed positions, ensuring that other downstream loads cannot trip the main circuit breaker off-line thus losing power to the normal side of the fire pump’s automatic transfer switch.

B. The new switchboard is recommended in an indoor NEMA 1 enclosure with a pull section, main circuit breaker section, and two distribution sections. Two different locations were considered for the location of the new switchboard: one was the exterior of the building, and the other was Mechanical Room 016. The exterior option is not recommended at this time as a future project intends to provide a new building in this area. In order to provide the new service in Room 016, a “top-hat” will need to be constructed above the switchboard. This will require the relocation of numerous other utilities including a vacuum return line, natural gas line, two steam lines, a fiber-optic cable, and numerous electrical and fire alarm conduits. The existing fuel line to the emergency generator will require some reconfiguration.

C. After installing the new transformer and switchboard, the existing normal loads can be re-fed from the new service.

D. Once the existing loads have been re-fed, the primary duct bank loop can be completed to the new transformer “PM-4” and existing transformers “PM-4” and “PM-5” and existing switchboard “SES-107” can be demolished.

3. Pad Mounted Transformer PM-14 serving RAD-107 Removal:

A. It is understood by Spur Design that the Radiology Expansion Project has relocated all X-Ray and MRI equipment from the B-wing of the hospital to the A-wing of the hospital, where it is fed from a new 480Y/277V switchboard. Being abandoned in place, pad-mounted transformer “PM-14” and panelboard “RAD- 107” will be removed in their entirety.

4. Relocation of equipment from raised concrete electrical pad and provide protective enclosure:

A. Relocation of the new, normal-power, pad-mounted transformer and switchboard, as indicated above, will allow the removal of the majority of the raised concrete electrical pad. Spur Design recommends that the existing electrical pull sections, currently located behind the existing switchboard “SES-107” and a walkway approximately 48” wide remain for access and maintenance. The existing stair can be relocated, and a safety handrail installed.

SITE LIGHTING SYSTEMS

1. The lighting systems for this work will be minimal and will consist of adding area lights within the service yard to allow for maintenance of the electrical systems at night. All lights will be wall-mounted LED wall packs with 4000K color temperature and connected to a critical branch circuit. Light levels will meet the VA Lighting Design Manual

649-18-102 (Spur #1395.29) Replace Hospital (Building 107) Electrical Service

Electrical-5 requirements, and emergency battery back-up wall packs will be provided around any new exterior electrical distribution equipment where required per the design manual.

2. Fixtures will be full-cutoff type to meet Dark Sky Initiatives. The VA Lighting Design Manual requires exterior LED fixtures to meet a minimum color rendering index (CRI) of

85. Manufacturers have standardized on a CRI of 70 for exterior lighting. Higher CRI’s are available, but fixture type/style selection is limited, and this requirement adds cost and lead time for fixture delivery for projects. A minimum CRI of 70 will be provided.

3. Lighting controls will be local switches unless the VA desires that these lights be on the building timeclock with the existing building-mounted exterior lighting.

BUILDING POWER DISTRIBUTION SYSTEMS

1. Modifications to the existing building power distribution system will be minimal. All distribution panels and panelboards currently being fed from switchboard “SES-107” will be re-fed from the new switchboard located in Mechanical Room 016.

BUILDING LIGHTING SYSTEMS

1. Modifications to the existing building lighting will be minimal. It will include removal of the existing light fixtures in Mechanical Room 016 and replacing with new 4’ LED strip fixtures.

ELECTRICAL CALCULATIONS

1. Voltage drop calculations will be performed for all new feeders and branch circuits.

Feeders and branch circuits will be sized to limit voltage drop to the levels recommended by the energy code (2% for feeders, 3% for branch circuits, with the combined drop no more than 5%).

2. Preliminary fault currents will be calculated to determine the available interrupting current (AIC) rating at the primary and secondary sides of the transformer and at the loads they serve. These calculations will be performed via SKM PowerTools for Windows software. Final fault current and arc-flash calculations will be performed by the electrical equipment supplier and based upon installed equipment on the project. A protective device coordination study will also be performed by the electrical equipment supplier and all recommended settings will be implemented at the time of installation.

GENERAL ELECTRICAL EQUIPMENT

1. Medium Voltage Transformers

A. All new transformers will meet VA specifications and be 12.47kV–208Y/120V, pad-mounted, oil-filled copper-wound, with dead-front, loop-style primary connections, primary fusing and include fault indicators on all incoming and outgoing primary feeders. The transformer will be installed on concrete pads and will be enclosed within a blast screen wall system. See “AE Physical Security Risk Mitigation Design Guidance Prescott 649-18-102 Replace B107 Electric” report included in this narrative set. Fault currents will be calculated to determine

649-18-102 (Spur #1395.29) Replace Hospital (Building 107) Electrical Service

Electrical-6 the available interrupting current (AIC) rating at the primary and secondary sides of the transformer and at the loads they serve. These calculations will be performed via SKM PowerTools for Windows software and incorporate information from the existing Electrical Assessment.

2. Site Underground Feeders, Branch Circuits, and Raceways

A. Primary, medium voltage feeders will include copper conductors with 15kV insulation and routed within Schedule 80 PVC raceways with concrete-encasement. A spare raceway will be included in the duct bank.

B. Secondary service entrance feeders will include copper conductors with 600V insulation, rated for underground installation, and routed within Schedule 40 PVC raceways with concrete encasement.

C. Manholes and handholes will be provided where required to minimize cable pulling tensions. All manhole covers will be lockable per PSRDM.

3. Switchboards and Distribution Panelboards

A. New switchboards will be sized for the loads they serve and will include 25% spare capacity and spare space. Bussing will be copper. The switchboard ampere interrupting current (AIC) rating will be fully rated and sized based on the available fault current. Switchboards will be floor mounted on a 4” tall concrete house-keeping pad.

B. New distribution panelboards will be sized for the loads they serve and will include 30% spare capacity and spare space. Panelboard bussing will be copper.

The distribution panelboard ampere interrupting current (AIC) rating will be fully rated and sized based on the available fault current. Floor mounted distribution panelboards will be mounted on a 4” tall concrete house-keeping pad.

C. New circuit breakers in the existing switchboard and distribution panelboards will have available ampere interrupting current (AIC) ratings to match the panelboard.

4. Metering and Power Monitoring

A. Power monitoring and metering will be provided at the main service equipment.

The monitoring/metering equipment will communicate with the VA-centralized remote metering station via a data backbone. The equipment will record, store and trend voltage, current, kW, kWh, kVA, kVAR, power factor, and voltage and current total harmonic distortion.

5. Surge Protection

A. A Type 2 Surge Protective Device (SPD) will be provided on the main electrical service and at panelboards that serve sensitive electronic equipment.

6. Disconnect Switches

649-18-102 (Spur #1395.29) Replace Hospital (Building 107) Electrical Service

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A. New disconnect switches will be provided for equipment. Switches will be heavy duty style, rated for the environment installed in and fused if required to protect equipment from high available fault currents. Disconnecting means will be provided within sight of all motors and other equipment.

7. Building Feeders, Branch Circuits, and Raceways

A. All conductors will be copper and routed within raceways.

B. A copper ground conductor will be routed with all circuits except building service entrance feeders.

C. Minimum raceway size will be 3/4” above grade and 1” below grade.

8. Wiring Devices

A. Light switches will be 20 amp rated, heavy-duty type with integral self-grounding mounting strap.

9. Grounding and Bonding

A. Service entrance grounding will be provided in accordance with the NEC.

Grounding and bonding connections will be made to an external ground rod, the telecommunications ground bus, the water service, structural steel, a concrete-encased electrode (Ufer), and above ground metal piping.

B. Ground rods will be copper-clad steel, ¾” diameter by 10’-0” long. Ground rods will be provided until the resistance to earth does not exceed 5 ohms.

C. Equipment grounding conductors will be installed with all feeders, and power and lighting branch circuits.

D. All metallic raceways will be grounded, and the equipment grounding conductor will be bonded to all junction boxes, pull boxes, enclosures and panelboards.

10. Labeling/Nameplates

A. All new and/or modified medium-voltage site and building distribution equipment will be provided with new phenolic resin labels screwed to the equipment. Normal power distribution equipment will have white lettering on a black background.

Essential electrical distribution equipment will have white lettering on a red background. Lettering will be 1” tall and include the name of the equipment, name of the equipment it is fed from, and the sizes of the conductors that it is fed with.

B. All new and/or modified low-voltage building electrical distribution equipment will be provided with new phenolic resin labels screwed to the equipment. Normal power distribution equipment will have white lettering on a black background.

Essential electrical distribution equipment will have white lettering on a red background. Lettering will be ½” tall and include the name of the equipment, name of the equipment it is fed from, and the sizes of the conductors that it is fed with.

649-18-102 (Spur #1395.29) Replace Hospital (Building 107) Electrical Service

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C. All new wiring device cover plates will be labeled with a permanent adhesive label listing panel and circuit feeding the wiring device.

GENERAL LIGHTING EQUIPMENT

1. Site Lighting

A. Site lighting will consist of LED light sources rated to operate between -40 degrees C and 50 degrees C, have a Correlated Color Temperature (CCT) of 4000K and a Color Rendering Index (CRI) of 70 or greater.

B. Light poles for site lighting will be specified to meet the 80 MPH wind requirements for the site with an additional 30% gust factor and the effective projected area of the selected light fixtures. Light poles will match existing campus light poles. All poles will be equipped with a handhole and mounted to concrete bases. Pole bases will project 6” above finished grade in most areas.

2. Building Lighting

A. Electrical room light fixtures will be LED type. Since this is the main electrical room serving the hospital, all light fixtures will incorporate a nickel-cadmium battery for operation of a minimum of 90 minutes, battery charger and an integral test switch.

3. Lighting Controls

A. Standard manual light switches will be quiet toggle type, specification grade and ivory in color as required by the VA design guide. Manual light switches will be utilized in spaces where automatic control of lights is detrimental to the occupant, such as in electrical and mechanical rooms.

LOW VOLTAGE SECURITY

1. Compound gate system will be activated via triple authentication. PIV, PIN Code and LPR all flagged positive read will activate gates. Backup for no PIV is SCC contact via AI Phone, complete with Facial Analytics camera.

2. Exterior transformers will be surveilled by trespass analytics camera.

3. Access to scoped areas of work will be armed with mag locks/electric strikes, PIV & PIN Code PACS, and contact sensors with anti-prop alarm, all tied to the SCC SMS/PSIM.

END DIVISION 26

Environmental - 1

Riverfront Safety & Health, LC (Riverfront), a Service-Disabled Veteran Owned Small Business, has performed a limited asbestos & lead identification survey at the 35% Site Investigation phase of Replace Hospital (Building 107) Electric Service (VA Project 649-18-105) located at the Northern Arizona VA Health Care System in Prescott AZ (The Project). The principal contacts for this project were John Neil of the VA Medical Center and Andrew Stevens of Spur-Design. The following report is provided for your review and future design considerations related to asbestos, lead, and mold issues associated with the proposed project, Replace Hospital (Building 107) Electric Service.

At this time, it is understood the scope of work for The Project includes, the SES-107 main distribution switchboard shall be replaced and relocated as follows:

• Transformers PM4 and PM5 shall be replaced and relocated near PM 17.

• SES-107 shall be replaced and relocated to Building 107 Room 016.

• Existing underground primary transformer feeders will be intercepted and extended as needed.

• New feeders shall be routed directly to new SES-107 and the Essential Emergency System

Distribution Board(s) from the outside areas.

• Relocate existing utilities and equipment impacted by the relocations.

• Removal and disposal of transformer PM14.

• The roof mounted MCC-2 service shall continue to be fed from PM17, no work.

• Disposal of all items replaced or removed from service.

On September 22nd, 2020, the limited asbestos and lead field survey was performed by Mr. Justin R.

Rhyneer, CIH and licensed asbestos inspector, project planner and EPA-HUD trained Lead Inspector/Risk Assessor, with the following limitations:

• The limited microbial assessment was based on visual observations only.

• General areas that were inaccessible for inspection and limited the inspector’s ability to directly observe and/or collect sufficient bulk samples included wall cavities and pipe chases. However, given the nature of the project, these locations will not likely be disturbed.

• Area of Environmental survey is limited to Building 107 Room 016, portions of Rooms 015 and 014, and associated outdoors area.

Prior to the field survey, the 2012 IHI Environmental Campus Survey Report was reviewed for previously identified asbestos-containing (ACM) and materials containing less than 1% asbestos within and near Building 107. Based on their Building 107 survey, the following materials have been identified to contain asbestos: vibration joint cloth, HVAC duct tape, historic light fixtures, fire doors, silver paint on HVAC roof duct, exterior surfacing (Stucco), sealant on roof penetrations, floor tiles and associated mastics, ceramic wall and floor tile systems, pipe insulation and mudded fittings.

This report summarizes the asbestos and lead-related issues identified with existing conditions for The Project. The sampling results have been summarized in Tables 1, 2, and 3 with the laboratory analytical reports and sample chains of custody contained in Appendix A and B.

Scope of Work

Riverfront provided personnel accredited under the Asbestos Hazard Emergency Response Act (AHERA), U.S. Environmental Protection Agency Model Accreditation Program for Asbestos Building Inspectors to perform the following:

1) Verify the presence, location, quantity, appearance, and condition of all applicable building materials exhibiting asbestos, lead and mold containing materials within Building 107 Room 016

SUBMITTAL

SUBJECT

649-18-102 (1395.29) Replace Hospital (Building 107) Electrical Service Bid Documents Environmental Design Narrative

649-18-105 Replace Hospital (Building 107) Electrical Service

SUBJECT Environmental Design Narrative

Environmental - 2 and outdoor related area. Project to relocate existing transformers and main distribution switchboard (SES- l07) from the elevated concrete pad to a ground mounted pad within a protective enclosure as follows:

a. The existing transformers PM4 and PM5 are to be relocated to the south of the elevated concrete pad with a new SES- l07 being installed ground mounted up against the exterior of the building. Since the existing generator in this location is non-operational, its removal will open space to accommodate the new switchboard. Existing underground primary transformer feeders will be intercepted and extended as needed. Refer to section 7.0 of this report.

b. New distribution feeders can be routed directly to basement distribution equipment and the Essential Emergency System Distribution Board(s). Additionally, new branch feeders can be routed overhead to the existing pull/splice cabinet located on the elevated concrete pad.

Once the existing SES-107 is removed, flat metal panels can be installed for the remaining cabinet.

c. Existing transformer PM 14 will be replaced with new complete with an internal switch per the VA Specifications. A new transformer will be installed ground mounted in front of the elevated concrete pad. A new 480Volt Distribution shall be installed adjacent to the transformer. The new distribution will provide overcurrent protection devices sized accordingly for the existing to remain.

d. A new CMU block screen wall will be provided to contain the relocated and new electrical equipment. Two sets of fabricated gates shall be provided for equipment access and provide for proper code clearances as required by the NEC.

Asbestos Containing Materials Inspection Results

Riverfront personnel collected a total of 28 representative samples of suspect asbestos-containing materials associated with planned work. Materials suspected as asbestos containing were plaster, concrete, interior stucco surfacing, penetration caulks, sealant on gray canvas, wall patch compound, interior and exterior window caulks, flex cloth, and white fiberglass insulation wrap. A minimum of three samples were collected of all suspect asbestos containing building materials found during the site visit based on conditions noted on September 22, 2021. Practical precautions were used in collecting samples to ensure safety of all personnel. All samples were safely collected, placed in sealed containers, and transferred with a written chain-of-custody, to EMSL, an AIHA & NVLAP accredited laboratory, for analysis.

All samples were analyzed using polarized light microscopy (PLM) analysis with dispersion staining (DS) according to U.S. Environmental Protection Agency (EPA) Method 600 IR-93/116 which is presently recommended by the EPA. Asbestos Containing Materials are defined by EPA as having greater than 1% asbestos as measured by PLM methods.

One (1) material group tested positive for containing asbestos reported at <1% chrysotile during the survey and may be affected by the project scope. This material group is as follows:

• Interior Wall Surfacing (Stucco) bulk sample results were positive. Two of the three samples yielded a laboratory result of <1% chrysotile located on the north interior wall in Room 16. This result is consistent with 2012 IHI Environmental results reported for the “similar” exterior wall surfacing. The stucco was in good condition. It is not likely this material will be impacted by The Project.

One (1) historic material group reported by IHI Environmental as positive for containing asbestos reported at <1% chrysotile will be affected by the project scope. This material group is as follows:

• Exterior Wall Surfacing (Stucco) reported at <1% chrysotile will be impacted during installation of new exterior doorway into Room 16. The stucco was in good condition. It is anticipated that less than 100 square feet of asbestos exterior stucco will be impacted by The Project.

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A summary of asbestos sampling efforts, including sample numbers, descriptions, locations, quantities, category (friable or non-friable) and analytical results are presented inTable 1. The full laboratory analytical reports are included in Appendix A. A summary of ACM materials identified by the 2012 IHI Environmental Campus Survey is presented in Table 2.

Lead Based Paint Results

A targeted lead inspection was performed to identify lead-based paint on primary substrates potentially impacted by project work. Typical component and substrate combinations sampled included concrete and stucco surface walls, concrete ceiling, CMU block, steel electric panel and box, steel gas pipe, cast iron pipe, steel louvers, interior and exterior wood window sills and frames, metal door frame, and exterior steel support brackets associated with Room 16 and exterior transformer area at Building 107.

Riverfront collected lead readings from potentially impacted materials and targeted surfaces to identify the presence of lead-based paint (LBP), which is defined by the EPA as greater than or equal to 1.0 mg/cm2 by surface loading (as tested by an XRF instrument). EPA/HUD compliant XRF (X-Ray Fluorescence) sampling methods, which are non-destructive, were employed for this project assessment. Note that lead glazing finishes on ceramic tiles and blocks have been tested in the same manner as painted surfaces, with results held to the same standard of lead mass loading 1.0 mg/cm2.

It is stressed that this sampling was intended to identify the presence of lead-based paint and/or lead glazed tiles and blocks within readily accessible areas of the building likely to become disturbed during The Project and associated with this particular project design, and not necessarily an EPA-HUD type “surface-by- surface” inspection. Readings were collected by an EPA-HUD trained and licensed Lead Inspector and Risk Assessor.

Testing locations and XRF results are contained in Appendix B. A total of 37 XRF measurements, including 9 measurements for QA/QC purposes were collected from painted surfaces and/or suspect lead-containing materials likely to be impacted by project work. Of these measurements, 6 readings are considered lead-based paint. The lead-based paint condition on all material was noted to be intact.

Six material groups tested positive as lead containing building components during the survey and may be affected by the project scope. The material groups are as follows:

• Wood Window Frame (Light Green) XRF result was elevated above the established threshold. The sample result was 8.2 mg/cm2. The estimated quantity of the material present is <2 ft2 and was intact at the time of the survey.

• Wood Window Sill (Light Green) XRF result was elevated above the established threshold. The sample result was 9.3 mg/cm2. The estimated quantity of the material present is <2 ft2 and was intact at the time of the survey.

• Exterior Wood Window Frame (White) XRF result was elevated above the established threshold. The sample result was 14.3 mg/cm2. The estimated quantity of the material present is <2 ft2 and was intact at the time of the survey.

• Exterior Wood Window Sill (White) XRF result was elevated above the established threshold. The sample result was 3.7 mg/cm2. The estimated quantity of the material present is <2 ft2 and was intact at the time of the survey.

• Steel Gas Pipe (Yellow) XRF result was elevated above the established threshold. The sample result was 3.7 mg/cm2. The estimated quantity of the material present is <20 linear feet and was intact at the time of the survey.

• Steel Door Frame (Gray) XRF result was elevated above the established threshold. The sample result was 12.5 mg/cm2. Two (2) door frames are present and the gray paint was intact at the time of the survey.

A summary of lead results for The Project is provided in Table 3.

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Mold Impacted Materials Inspection Results

A visual mold inspection was performed on targeted materials likely to be impacted by project work. Suspect mold growth was not observed, and remediation was not considered necessary for this project.

Conclusions and Recommendations

Asbestos Containing Materials

This limited inspection identified asbestos-containing exterior Stucco and window systems within Building 107 Rooms 014 and 016. Disturbance to exterior Stucco and window systems will disturb (Impact) ACM.

Recommended Response Actions

Assuming future construction/renovation plans include the demolition, disturbance and/or penetration of noted ACM materials, the following recommendations are provided with regard to their handling:

• A comprehensive asbestos remediation design specification should be developed to govern the proper repair, handling and/or removal of ACM. This specification should be prepared in accordance with current EPA/OSHA/State and Local project design guidelines and should be written to account for the potential disturbance of any ACM, directly or indirectly, during the course of construction related activities.

• Should any identified ACM components require disturbance and/or removal as part of planned renovation plans, such components should be removed in whole or protected in place, as deemed most appropriate by construction needs and/or asbestos remediation project design specifications.

• All ACM removal activity is to be performed by professional asbestos abatement contractors and workers that are properly licensed for such and trained/accredited in accordance with applicable EPA-AHERA training requirements.

Lead Based Paint and Ceramic Glazed Containing Materials

All lead-based materials as identified in Appendix B that will be impacted by project work will require controlled removal by trained licensed workers employed by a licensed lead abatement contractor, with all work performed as defined within Technical Specifications following all Federal, State and Local regulations.

PCB Containing Materials

Verification of date of manufacture and PCB status of transformers PM-14, PM-4 and PM-5 were received from the VA. All transformers were reported as tested in 2000 and were reported by SDMeyers as Non- PCB by specimen collection in accordance with ASTM test method D4059.

Sincerely, 649-18-105

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08/05/22 Justin R. Rhyneer, CIH Date Principal

Table 1: Asbestos Bulk Sampling Summary Table 2: Historic Sampling Summary Table 3: XRF Sampling Summary Appendix A: Asbestos Laboratory Results Appendix B: Professional Certifications

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649-18-102 (1395.29) Replace Hospital (Building 107) Electrical Service

SUBJECT Fire Protection Narrative

Fire Protection - 1

Background

The scope of this project is a replacement of the main electrical service for Building 107 at the Northern Arizona

VAMC located in Prescott, Arizona. Under contract to the Department of Veteran Affairs, Spur Design has assembled a design team to develop the construction documents for the project. All equipment, devices, appliances, and systems will be designed and installed to meet the Scope of Work and all applicable codes and standards.

Approach

This design narrative will address the fire protection requirements provision. This design narrative addresses the required fire protection systems, as well as detail what is to be provided for the project.

Criteria

The project will be designed in accordance with the following criteria:

• VA Fire Protection Design Manual – Eighth Edition, June 1, 2021

• VA Physical Security & Resiliency Design Manual, 2020 Edition, Rev. 09-01-2022

• NFPA 1, Fire Code, 2021 Edition

• NFPA 10, Standard for Portable Fire Extinguishers, 2022 Edition

• NFPA 13, Standard for the Installation of Sprinkler Systems, 2022 Edition

• NFPA 70, National Electrical Code, 2020 Edition

• NFPA 72, National Fire Alarm and Signaling Code, 2022 Edition

• NFPA 90A, Standard for the Installation of Air-Conditioning and Ventilating Systems, 2021 Edition

• NFPA 99, Health Care Facilities Code, 2021 Edition

• NFPA 101, Life Safety Code, 2021 Edition

• International Building Code, 2021 Edition

Campus Water Supply, Distribution, and On-Site Storage

Fire water for Building 107 is supplied by the combined domestic and fire water distribution system. The existing usable water quantity is assumed to be adequate to support the anticipated fire suppression demand for the project. No additional water storage is expected for this project.

Fire Pump (Existing – Not in Scope of Work)

The scope of work area is currently supported by the hospital’s existing fire pump located in the basement of

Building 107. No major modifications to the existing fire suppression system serving the scope of work area are expected for this project.

649-18-102 (1395.29) Replace Hospital (Building 107) Electrical Service

Fire Protection - 2

Fire Department Access and Fire Hydrants

Fire Department Access and Fire Hydrants are existing and outside the scope of this project.

AUTOMATIC SPRINKLER

SYSTEM

The building is currently served by a single fire pump. The existing riser serving the switchgear room will remain in place as the scope of work is not causing major impact to the existing system.

All sprinkler system alarms will be electrically powered and supervised by the fire alarm system. Fire sprinkler piping will be routed, distributed, and concealed above the suspended ceilings. The existing sprinklers and branch lines will remain. No major modifications to the existing fire suppression system serving the scope of work area are expected for this project.

Sprinklers are expected to remain untouched in the scope of work area. Any modifications to sprinkler finish shall match existing sprinklers within the mechanical space, as needed. Guards will be provided for low ceilings, bellows ducts, beams and/or other sprinkler heads less than 7 feet above the finished floor as needed. Sprinkler piping in unfinished areas such as mechanical and electrical rooms will be exposed with upright sprinklers. The layout of any additional sprinklers with obstructions will be coordinated per NFPA 13.

The systems will use the existing Fire Department Connection (FDC).

An existing automatic sprinkler system is provided throughout the project area in accordance with NFPA 13. The project area contains rooms such as storage closets, mechanical rooms and electrical rooms that are classified as Ordinary

Hazard Group 1 and will be protected with a minimum design density of 0.15 gpm/ft2 over the most remote 1500 ft2.

The outside hose stream demand and duration for ordinary hazard areas is 250 gpm at 60 minutes per NFPA 13 Table 19.3.3.1.2.

The automatic sprinkler system will be tested to assure that equipment and components function as intended. Upon completion of specified tests, the material and test certificates will be submitted to the VA. After hydrostatic testing, the sprinkler system will be flushed per NFPA 13.

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Any modification to existing piping must be done with steel piping. Piping 2 inches or less must be a minimum schedule 40 and all piping larger than 2 inches must be a minimum schedule 10.

Seismic design category is C. Seismic design to be in accordance with the

Seismic Design Guidelines in H-18-18. Refer to Structural documents for additional information.

PORTABLE FIRE

EXTINGUISHERS

Existing portable fire extinguishers will remain in accordance with NFPA 10 as required by the VA Fire Protection Design Manual.

FIRE ALARM SYSTEM

The scope of work area will be protected via an existing Voice-Evacuation Fire

Alarm. The existing fire alarm panel (Notifier NFS2-640) is located in Building

107 Electronics Closet Room SP127A-107.