SEATTLE, WASHINGTON

MARCH 26, 2021

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Technical Exhibit #2

Project Explanation and Electrical Summary Exclusions:

The NOAA (National Oceanic and Atmospheric Administration) Western Regional Center located at

Seattle has on its property Hangars 32 and 33 (Image #1). These hangars were built for the Navy in the mid-1930’s before United State’s involvement in World War II. Currently these hangars house several operations, namely: office, storage, and small-scale net assembly. Also, Hangar 32 includes PMEL buoy and Seafood Inspection operations.

Image #1 – NOAA WRC Site Map

NOAA has expressed an interest in renovating the hangars to bring them up to current building and electrical codes (National Electrical Code 2020, Washington Administrative Code 296-46B, Seattle

Energy Code 2018, and International Building Code 2018). Within the building is hazardous building materials (i.e., asbestos, lead paint, etc.) and electrical equipment that is well beyond its life expectancy, installed incorrectly, or is abandoned. Electrical projects have occurred since the

1990’s that replaced some of the aging gear. Most of that equipment will either remain in-place, removed due to being abandoned, or be removed due to renovating occurring in spaces they exist.

The subject of this document is the evaluation of the electrical system in Hangar 32.

A good faith effort was made to investigate electrical features representing the majority of electrical circuits in the structure. It was not practical to investigate each switch, junction box, wiring devices and other electrical components due to unsafe electrical conditions, accessibility constraints, hidden conditions, shear number of devices, and overall presence of ACM and LBP throughout the structure.

This Assessment of Hangar 32 doesn’t include low voltage equipment – namely, I.T., data conduit, cable trays, Wi-Fi, security, access, data equipment and rooms, and data jacks. The assessment is restricted to all power conveying equipment, lighting fixtures, and lighting controls.

Electrical Equipment Summary:

Electrical Service Equipment: The service is comprised of a Seattle City Light 300kVA transformer with a secondary of 480Y/277 volts and is dedicated to Hangars 32 and 33 (Image #2). The service entrance conduits and cables are two paralleled 3-1/2” underground conduits with four

500MCM cables in each. The main service equipment consists of a 1600 amp switchboard installed in the Hangar 32 North “Lean-To.”

The 1600 amp Siemens main switchboard (Photo #1) was installed in 1991 with the main disconnect currently fused to 800 amps. The paralleled 500MCM cables are rated for 760 amps (2 x

380 amps). The switchboard contains seven circuit breakers with only two (400 amp each) in use

– one feeding Hangar 32 and the other feeding Hangar 33 as well as electrical equipment on the south wall of Hangar 32 (Images #3 & #4).

Image #2 - Hangars 32 & 33 Main Electrical Service One-Line (From 1991)

Image #3 - Hangar 32 Main Switchboard One-Line (From 1991)

Photo #1 - Hangars 32 & 33 Main Switchboard (Hangar 32 Main Electrical Room)

Image #4 - Hangar 33 Main Switchboard One-Line (From 1991)

The original (1930’s) basis for the load distribution was by feeding custom 120/240 volt single phase panel configurations (Image #5) located in each of the stairwells in the four corners of both hangars. Redesign and construction converted these to 120/208 volt single phase. Most of these original panel systems are either in full or partial operation and/or are used as pull boxes to down stream electrical equipment. Using a panel for a pullbox of unrelated equipment is not in violation of the National Electrical Code (NEC 312.8) as long as it remains under a percentage of total fill and is labelled with its use.

The panels are fed by underslab feeders. In a pullbox below the panels are multiple feeder taps to downstream panels in other stairwells. While some of the wiring in Photo #2 appears newer most of it dates back to the 1930’s.

IBC 1020.1 prohibits the use prohibits “exits” (stairways being one type) shall not be used for any other purpose than the “means of egress.” Under emergency/catastrophic conditions electrical equipment, except those that aid in the exiting of the building, can hamper egress.

Image #5 – Hangar Stairwell Power Distribution Riser

Photo #2 - Hangar 32 Custom Stairwell Panel (Typical All Four Stairwells)

REMOVE

The single 400 amp disconnect (in the Main Switchboard) for Hangar 32 feeds two feedthrough distribution panels – one feeding various sub panels while the other feeds the customs panel pictured above. Both distribution panels are original and still in use.

In addition to the new and existing electrical equipment on the south side of the Hangar 32 warehouse is a row of panels and transformers installed in 1991. These are fed by the 400 amp

480Y/277 volt Panel CB2 in the SW corner of the warehouse. (See Image #5)

Photo #4 - Hangar 32 South Re-Feed Photo #5 – Hangar 32 Panel CB2 (SW Corner)

Photo #4 illustrates how the overhead feeder to Hangar 33 is tapped below the weather-head and fed back into Hangar 32 to Panel CB2 (Photo #5). While this arrangement is unusual it’s not against the electrical code. However, this set of weather-heads can be confusing to someone trying to determine if these lines are going in or out of the building. To eliminate this confusion a sign legible from ground level explaining the configuration should be added. “FEEDER TO HANGAR

33” for instance.

There’s a considerable amount of abandoned-in-place equipment. This includes special outlets, disconnects, panels, conduits, junction boxes, etc. Some of the equipment has been repurposed as junction boxes. In addition, since the original construction, some equipment has been installed in an unworkman-like manner and against NEC 110.12.

There are two plywood office-type structures (one in the center of the Hangar 32 warehouse and the other in the south end) installed well after the original construction that will be removed as part of this process. These are both fed overhead from panels at either end of the warehouse. A third structure in the warehouse, the net construction building, shall remain “as-is,” as well as the wind tunnel, two freezers, parts room, crane, and paint booth.

Photo #6 – Unworkman-like and Abandoned Photo #7 – Installation Against Code

Equipment (Center-North of Hangar 32 (SE Corner of Hangar 32)

The issues in Photo #6 are in violation of NEC 110.12 requiring a “neat and workmanlike” installation. The newer panel in Photo #7 is facing the wall, making access to the panel difficult and violating the code-required (NEC Article 110.26) space in front for an electrician to safely work on the equipment.

Hangars 32 Lighting Equipment:

The standard fixtures in the “Lean-To” spaces are 4’ wrap-arounds and 2’x4’ lay-in troffers (see

Photos #8 & #9). Most, if not all, of these fixtures have been installed in the past few decades to replace the original fixtures. Since then many have been retrofitted with LED lamps. Each area is controlled by a switch mounted near the door. In several areas maintenance has been neglected as these spaces are presently not in use (i.e., kitchen, some offices, storage spaces, etc.). No timing, occupancy sensing, or dimming devices are present in any of the spaces.

RELOCATE

Photo #8 – 4’ Wrap-Around Fixtures Photo #9 – 2’x4’ Lay-In Troffers

(North Lean-To Level 1 Storage Room) (South Lean-Top Level 2 Office)

Hangar 32 warehouse areas are lit by 8’ industrial fixtures (Photo #10 blue arrow). Hangar 32 fixtures have been retrofitted with LED lamps and the spaces are equipped with motion detection.

The previous fixtures (same photo, red arrow) are still present but not in use. The lighting levels are acceptable for the tasks.

The main doors exterior fixtures (Picture #11) appear to be LED’s. Only two of the original five are existing and, upon closer inspection, appear to be attached haphazardly. Also, they are constantly on with no apparent method to switch off.

Photos #10 – Hangar 32 Warehouse Fixtures (North)

Photos #11 – Exterior Fixtures (East Hangar 32)

Analyses of the Existing Electrical & Lighting System:

It is standard engineering practice to consider replacing electrical equipment that is at least forty-years-old. By then circuit breakers have begun deteriorating in their efficiency, wiring and lug nut connections have gone through many cycles of heating and cooling – creating points of failure, exposed steel and copper parts have begun oxidizing, and grounding fails. All these can create unsafe conditions. Washington state code dictates that all unused wiring shall be removed from conduits.

The equipment that was installed in the 1990’s appears to be good operational order with no apparent damage or oxidation. However, not all of the new equipment was installed in a safe, workmanlike manner, or is code-compliant, as illustrated above.

The attached thermographic inspection states all of the equipment, except Panel PNL-HH on the northeast side of level 2, pose no heating threat. Under my recommendations below PNL-HH is to be removed as part of the abatement process.

Recommendations:

All of the electrical equipment mentioned above inside the Lean-To’s and stairwells shall be removed to allow these areas to be properly abated – excluding the main switchboard and the service feeders to it. Since under-slab feeders can be impossible to be removed from the conduits all of the power feeder conduits should be cut and capped at floor level and grouted to floor level.

Testing of all existing feeders to remain shall be conducted.

Within the warehouse all of the panels, disconnects, feeders, wiring, above-grade conduits, junction boxes, and special purpose outlets shall be removed. The new panels and transformers on the south end shall remain and service any new loads on the first and second floor of the south

Lean-To – including two new 100 amp 208Y/120 volt load centers installed on either end of the office/storage space.

At the center of the north wall of a 400 amp, 480Y/277 volt distribution panel shall be placed to support all equipment on the north end – including the Lean-To’s. This will include the power supply to the net construction building. A 75kVA transformer shall feed a 225 amp 208Y/120 volt panel. The 208Y/120 volt panel shall subfeed the two 100 amp load centers on either end of the office/storage space on the second floor – similar to the south end. All other expected 208Y/120 volt loads on the first floor shall be fed from the either the new 480Y/277 and 208Y/120 volt panels. The new and existing 400 amp panels shall also feed any forklift outlets to remain, the net construction building the wind tunnel, two freezers, parts room, paint booth, roll-up door bay doors.

It has yet to be determined where any new power outlets or heaters connections will be located.

Until these receptacle locations are determined use the following guidelines: In all office spaces locate one duplex receptacle every ten feet. In small storage spaces and hallways provide one duplex receptacle. In large storage spaces provide one every twenty feet. In all offices route an extra ¾” conduit from a new junction box for data mounted adjacent to the outlet up to wall and above the drop ceiling. Provide five ¾” conduits from above any new panel to the ceiling space above.

The new lighting in the Lean-To’s and stairwell shall use either 4’ LED strip fixtures or 2’x4’ LED troffers, depending on the nature of the installation. Egress lighting shall be either LED “bug-eyes” or standard fixtures with battery backup functionality. While the existing unused pendant fixtures in the warehouse should be removed, the warehouse LED strip fixtures with motion-detection can remain as this meets the current Seattle Energy Code (SEC) C405.2. However, the removal of the two-story structure in the center of the warehouse will mandate new fixtures.

Seattle Energy Code C405.2.1 dictates that occupancy sensors shall be included in all spaces present in the Lean-To’s. Utility rooms (electrical and mechanical) are excluded from this requirement. SEC C405.2.4.1 dictates daylight responsive controls that control dimming in spaces next to vertical fenestration with more than two fixtures in the two dimming zones.

Match the existing 8’ industrial fixtures with LED’s. In addition, provide seismic supports for all warehouse fixtures. The exterior fixtures over the hangar doors should be replaced and mounted correctly. Also required are battery backed up fixtures over all exterior egress doors (SEC

C405.2.5). Controls and maximum wattages for these areas shall be determined by the SEC

C405.4.2.

Additional Information:

The PMEL buoy and Seafood Inspection operations are to remain “as-is.”

During our initial site walk conversation expressing concern about the proximity of the small water tank in Photo #12 to the adjacent electrical equipment. National Electrical Code Article 110.26 describes the space about electrical equipment required to be kept clear for both the equipment and the people servicing it. In this case it is 30 inches wide and 36 inches deep. Article

110.26(E)(1)(a) states that nothing shall be above the electrical equipment considered a “foreign system” (i.e., water tanks, for instance) shall exist lower than 6 feet. Being next to electrical equipment doesn’t qualify as intruding into the electrical space. However, it is understandable that a piece of equipment as this in such close proximity to electrical gear would be disconcerting.

While it not required to be relocated NOAA can have it moved to a better location.

Photo #12 – Water Tank and Electrical Equipment

(South of Warehouse Wall of Hangar 32)

Final Observations and Recommendations:

1) The sum total of load change to the electrical service should be negative due to the removal of many structures, electrical equipment, and conversion of light fixtures LED. An extensive load study should be part of the design process to ensure there is plenty of available load on the service.

2) Grounding and bonding connectivity should be thoroughly adhered to as it is unclear if the existing equipment is currently complying.

Scope of Work:

Below is a scope of work by line item. It should be considered general instructions for the intention of removing and replacing the electrical equipment in Hangar 32.

# Category Description

1 Electrical Service Demo of existing warehouse equipment (outlets, structure feeders, conduits, etc.)

2 Electrical Branch Demo of Lean-To electrical equipment (panels, receptacles, lighting, power connections)

3 Electrical Service Equipment

Demo all switchgear identified in report

4 Electrical Distribution (North Side)

Add new 400A 277/480 panel, 75kVA transformer, 200 amp 277/480 lighting panel, 225A 120/208 panel, (2) 100 amp panels and associated feeders

5 Electrical Distribution Refeed existing equipment to remain

5 Electrical Distribution (South Side)

Add new 75kVA transformer, (2) 100 amp 120/208 panels, and associated feeders

6 Electrical Branch (North Lean-To)

Outlets, lighting fixtures, power and lighting controls, equipment connections, branch wire & conduit.

7 Electrical Branch (South Lean-To)

Outlets, lighting fixtures, power and lighting controls, equipment connections, branch wire & conduit.

8 Warehouse Lighting Provide new lighting fixtures and controls

9 Warehouse Lighting Provide seismic protection for existing fixtures

10 Exterior Lighting Area Lighting and controls

The Hangar 32 One-Line (Page 14) represents the proposed electrical switchgear layout and is intended to be diagrammatic and schematic only.

T

BURIED SCL PRIMARY SERVICE

(EX) 300KVA

SCL XFMR M

(EX) MAIN SWITCHBOARD, 1600A, 480Y/277V, 3Ø, 4W

S P

A R

E

S P

A R

E

S P

A R

E

TO

HANGER

NEW

DISTR PNL

480/277V

400A MLO

75 kVA

NEW XFMR

480Y/277V, 3Ø, 4W 208Y/120V, 3Ø, 3W

NEW

PNL

208/120V

225A MCB

NEW

PNL

208/120V

100A MLO

NEW

PNL

208/120V

100A MLO

LEVEL 1

LEVEL 2

(EX) TAP

(EX) SCL CT & METER

HANGER 32

PROPOSED ONE-LINE

FED FROM 100A CBs

NORTH

SOUTH

NEW

LTG PNL

480/277V

200A MLO

75 kVA

(EX) XFMR

480Y/277V, 3Ø, 4W 208Y/120V, 3Ø, 3W

(EX)

NET BLDG

PNL

208/120V

200A MCB

(EX) 100A DISC

(EX)

DISTR PNL

480/277V 400A

TO EXISTING

PANELS/XFMR

SOUTH WALL

30 kVA

NEW XFMR

480Y/277V, 3Ø, 4W 208Y/120V, 3Ø, 3W

NEW

PNL

208/120V

100A MCB

W/ FEED-THRU

LUG

NEW

PNL

208/120V

100A MLO

HANGAR 32

PROPOSED ONE-LINE

Thermography Inspection at

NOAA Sand Point Hangar 32

NOAA Building 32

63rd Ave NE Seattle, WA 98115

January 19th-29th, 2021

By

Jeff Ochsner

Inspection Site Information

Customer NOAA Western Regional Center

Address 7600 Sand Point Way NE

Contact person Duane Budd 425-922-2078 / Don Krigsvald 360-350-2221

Thermographer Jeff Ochsner 206-947-5500

Thermographer Jeff Ochsner 206-947-5500

Thermographic Inspection

Inspection Conducted

1/19/21 – 1/29/21

NOAA Sandpoint – Hanger 32

Electrical Facility Assessment

INSPECTION STANDARDS

This report includes a complete listing of all equipment scanned, and visual documentation and analysis of all thermal anomalies discovered during the inspection.

For conditions reported, the following ratings system is used to establish a priority level for recommended action:

0: No abnormality No action

1: Low grade fault To be monitored – Plan new inspection within 90 days

2: Medium grade fault Repair at scheduled shutdown

3: Severe fault Repair immediately

All readings shown in this report reflect the conditions found at time of testing. Ambient air temperature, electrical load on equipment, and other environmental conditions can affect readings, so temperatures shown are estimates. The guidelines used to evaluate site conditions are as follows:

Circuit Breakers (per NETA 2006 Guidelines):

Temperature Difference based on comparison between similar components under similar loading

Temperature Difference based upon comparisons between component and ambient air temperatures Recommended Action

1˚C - 3˚C 1˚C - 10˚C Possible deficiency; warrants further investigation

4˚C - 15˚C 11˚C - 20˚C Indicates probable deficiency; repair as time permits

-- -- -- 21˚C - 40˚C Monitor until corrective measures can be accomplished

>15˚C >40˚C Major discrepancy; repair immediately

Microhm or millivolt drop values shall not exceed the high levels of the normal range as indicated in the manufacturer’s published data. If manufacturer’s data is not available, investigate any values which deviate from adjacent poles or similar breakers by more than 50 percent of the lowest value.

Transformers:

Check for unusual thermal imbalances between phase connection points, report to customer when identified

Disconnects:

Check for thermal imbalances in fuses, connection points, report imbalances to customer when identified

1/19/21 – 1/29/21

LOCATION ID

TAG #

EQUIPMENT DESCRIPTION RECOMMENDED ACTION REMARKS

Bldg. 32 NW Corner/Room 112 641 Switchboard 800A Fused – 480V 3PH, 4W NONE

Bldg. 32 NW Corner/Room 112 642 Switchboard 800A Fused – 480V, 3PH, 4W NONE

Bldg. 32 NW Corner/Room 109 643 PNL-F 400A Main Breaker,480V, 3PH, 4W NONE (5)K.O. Seals needed - Very Old, Remove/Replace

Bldg. 32 NW Corner/Room 109 644 PNL-F1 Main Lug 100A, 480V, 3PH, 4W NONE

Bldg. 32 NW Corner/Room 109 645 45 KVA Transformer 480V208V NONE

Bldg. 32 NW Corner/Room 109 646 Disconnect S-2 , 150A, 208V, 3PH

Feeds PNL-F2 NONE Very Old, Remove/Replace

Bldg. 32 NW Corner/Room 109 647 PNL-F2 150A Main Breaker, 208V, 3PH, 4W NONE

K.O. seals needed, 3”,1”,3/4”, ½”

CKT-26,28,30 has 2wires per, wrong size wire for 100A 3-pole

Bldg. 32 - NE Corner 648 PNL-DD Main Lug 120/208V, 3PH, 4W

Fed from 75KVA Transformer

NONE

Panel does not have main breaker or disconnecting means. Needs ½” K.O. seal

Bldg. 32 - NE Corner 649 Disconnect T-32NL 100A 480V, 3PH, 3W NONE

Disconnect is not fused, missing bushing on line side, missing mounting screws to hold to wall. Fed from?

Bldg. 32 - NE Corner 650 75 KVA Transformer NONE

Bldg. 32 - NE Corner 651 PNL-D 125A 120/208V, 3PH, 4W NONE Main lugs used to splice #2 and #6 STR copper conductors. Fed from?

Bldg. 32 - NE Stair – 2nd Floor 652 PNL-HH 100A 120/208V 3W Low Grade Fault

CKT-18 To be monitored –

Plan new inspection within 90 days

Dan Krigsvold removed hot breaker(#18), Re-terminated wire to ckt-20

Bldg. 32 - NE Stair – 2nd Floor 653 PNL-GG 100A 120/208V 3W NONE

Bldg. 32 - NE Stair – 2nd Floor 654 150A Breaker Feeds Security

Fed from Panel D (splice box)

NONE

Very old – Plexiglass cover

Remove/Replace - Wrong size wire

Bldg. 32 – Center - West 655 PNL-K 225A 3PH, 4W NONE Old – Remove/Replace

Many code violations

Bldg. 32 – Center - West 656 75 KVA Transformer T-2 480V208V NONE

Bldg. 32 – South of Center 657 60A Disconnect 480V, 3PH

(Rope Strength Tester)

NONE

Code Violations – wire size too small

(2)#10 wires on each lug of load side

Bldg. 32 – South of Center 658 Disconnect 60A 480V, 3PH NONE

Code Violations-#12AWG Doubled up w/#6AWG on Line side lugs.

Remove/Replace

Bldg. 32 – South of Center 659 Disconnect 30A 480V, 3PH NONE Code Violations- 250V fuses, Remove/Replace – Very old

Bldg. 32 – South of Center –

West wall

100A PNL, 120/208V, 3PH, 4W

(new Sq D PNL fed from 30KVA XFMR)

NONE

Bldg. 32 – South of Center –

West wall 661 30 KVA Transformer 480V120/208V NONE

Bldg. 32 - SE (Brown Structure) 662 PNL- AB 125A 120/208V 3PH, 4W, Main Lug

(new Sq D QO PNL)

NONE

Code Violation- needs correct lug (#4-

#14AWG) for ground.

Bldg. 32 - SE 663 PNL-CB1 100A, 208V, 4W, Main Breaker NONE

Bldg. 32 - SE 664 Disconnect S-5 125A Fused, 208V, 3PH, NONE

Code Violation-Line side lugs not rated for

(2)#2AWG, Load side not rated for #6 and

#2AWG- Very old – Remove/Replace

Bldg. 32 – SE Stair Room 132C 665 PNL-C 3PH, Sub to P2 NONE Very old, Remove/Replace

Bldg. 32 – SE Stair Room 132C 666 FU-2 (2)100A Fuses 208V NONE Very old, Remove/Replace

Equipment List

1/19/21 – 1/29/21

Bldg.32 667 Light Panel C Single Phase Bottom Right NONE Very old, Remove/De-Energized

Bldg.32 668 Panel Top Right (8)Glass Fuses 120/208V NONE Very old, Remove/Replace

Bldg.32 669 PNL-Z 200A, 120/208V, 3PH, 4W, Main Breaker NONE

Bldg.32 670 PNL-Y 200A, 120/208V, 3PH, 4W, Main Breaker NONE

Bldg. 671 75 KVA Transformer TT1 NONE

Bldg.32 672 PNL#5 225A, 120/208V NONE

Bldg.32 673 75 KVA Transformer #5 480208V NONE

Bldg.32 - South Wall - West 674 PNL-AA 225A, 120/208V, 3PH, 4W, Main

Breaker

NONE

Bldg.32 - South Wall - West 675 PNL-A 100A 277/480V, 3PH, 4W, Main Breaker NONE Code Violation- Line side main breaker

(2)#4AWG on each lug

Bldg.32 - South Wall - West 676 75 KVA Transformer T-1 480208V NONE Top of transformer damaged

Bldg.32 - South Wall - West 677

PNL-CB2 400A, 277/480V, 3PH, 4W,

Main Breaker

NONE

Bldg.32 SW Room 149D 678 PNL-FU-1 (2)150A Fuses 120/208V NONE Very old, Remove/Replace

Bldg.32 SW Room 149D 679 PNL-D NONE Very old - Remove – De-Energized

Bldg.32 SW Room 149D 680 PNL-P2 NONE Very old - Remove – De-Energized

Bldg.32 - SW - Stair – 2nd floor 681 PNL-JJ 100A 1PH, 3W, 120/208V, Main Breaker NONE Splices in panel

Bldg.32-South-2nd floor-

Hall/Center 682 PNL-F3 100A 277/480V, 3PH, 4W, Main Lugs NONE

Code Violation-

480V PNL w/ 120/208V colors(Blk,Rd,Blu)

Bldg.32-South-2nd floor-East 683 PNL-II 100A 120/208V, 1PH, 3W, Main Breaker NONE