Attachment K - Existing Condition.pdf

Attachment K

Date: August 24, 2026

EXISTING CONDITIONS

Life Safety Existing Conditions

The main conventional FireLite Alarms Sensiscan 1000 fire alarm control panel is located in C-Bay, in the ‘circulation’ area next to the ‘food service’ area. The panel is obsolete. A Gamewell Master Box #2323 for fire alarm signal reporting is mounted to a light pole East of Bay C.

Manual pull stations and fire alarm horn/strobe notification appliances are installed at most but not all exits.

Limited fire alarm notification appliances are also provided in the office building addition and mercantile

Smoke detection is not installed in the warehouse, however there is existing ceiling mounted conduit and backboxes that appear to have once held smoke detectors.

Electric alarm bells are installed in the building at high elevations on columns. These appear to be activated by the fire alarm system when the existing sprinkler system risers are flowing. Exterior to the building outside the sprinkler riser rooms, both water motor gongs and electric alarm bells are installed.

Interior to the building on the sprinkler riser room walls, electric alarm bells are also installed.

The sprinkler system risers are monitored with Potter OSYS-B valve supervisory switches, a Potter WFSR-B waterflow switch and Potter PS10-2 air pressure switches.

An addressable Simplex 4010 fire alarm control panel is installed in the ‘circulation’ area within a leased portion of the building in the south-west portion of A-Bay. It is believed that this was installed to provide fire alarm coverage throughout this area of the building for a renovation project. The Simplex panel appears to feed fire alarm equipment throughout this office and adjacent mail center (rooms 170-182).

These areas are provided with smoke detectors, manual pull stations, horn/strobe notification appliances, electric bells, and the data processing area is provided with a raised access floor.

A Federal Signal Wide Area Mass Notification System (WAMNS) radio transceiver (site #87), is installed in the south-east corner of D-Bay. The associated antenna is mounted to the exterior of the south side of the building.

Within the building, there were five Federal Signal loudspeakers observed, mounted above the rolling fire doors separating bays. The Federal Signal system is connected to the installation-wide exterior Giant Voice system.

The Federal Signal mass notification system is independent of the building fire alarm system.

Eight dry-pipe sprinkler systems with 6-inch risers are installed throughout the building; risers are installed in small wooden construction rooms along the outer walls of the building (one on the west side and one on the east side or each bay), with unit heaters installed in each room. One additional wet riser valve is installed in Bay A, serving the heated office areas. The two 2HP General Air (Model LT1300300A) air compressors serving the dry sprinkler systems are located in Bay B. The air compressors are located in the east sprinkler riser room, and in the southeast corner of the open warehouse next to the electrical switchgear.

Several internal fitouts do not have sprinkler system coverage. This includes warehouse bathrooms, office areas, telecom rooms, the forklift charging area, and the exterior loading dock.

The dry sprinkler system risers do not have hydraulic design plates installed. The hydraulic design plate on the wet sprinkler system for the heated NMCI office area in Bay A indicates this system was designed for light hazard system coverage.

The building is provided with a looped service main that is 12-inches in diameter on the north and East side of the building, 10-inches in diameter on the South side of the building, and 8-inches in diameter on the West side of the building. Each existing riser is fed from separate 6-inch diameter service laterals.

There are no backflow preventers observed in the building.

Mechanical Existing Conditions

The general warehouse spaces are heated via propeller-style unit heaters. The unit heaters were located near each of the exterior overhead doors, with the exception of the two south-facing doors in Bay D.

Additional unit heaters were located near the center of each bay. All unit heaters were located above the main circulation paths, though a few were very close to the existing storage racks. The unit heaters are fed from low-pressure steam mains that run centrally down the length of the building. Steam piping mains serving the unit heaters were measured to be between 19’-0” and 19’-11” above the finished floor (AFF).

The steam traps at each unit heater are the low points in the steam piping system; the lowest was measured at 17’-3” AFF.

The northern portion of Bay A is served by a packaged split-system air handling unit located on the mezzanine above the ceiling. The cooling coil is a direct expansion coil, with the air-cooled condensing unit located on the roof; R-22 is the refrigerant. R-22 refrigerant has been phased out globally and is no longer produced or imported into the U.S. as of January 1, 2020, due to its ozone-depleting properties, meaning only recycled R-22 is available for servicing older systems; this makes repairs more expensive and has led to a push to use newer, eco-friendly refrigerant alternatives like R-454B or R-32 in modern units. The heating coil is fed from the lowpressure steam system. Outdoor air intake and relief air discharge are via louvered penthouses on the roof. The supply and return ductwork are concealed above the ceiling.

The two-story structure in Bay A that houses offices and the conference room is served by ducted split systems.

Both the evaporator and condensing units are located indoors, behind the offices. Ventilation is provided by an energy recovery ventilator (ERV) also located indoors. The outside air is drawn from an approximately 8”x8” louver located on the building exterior. Each restroom in Bay A has a small wall-mounted exhaust fan.

The detached offices in Bay B are served by ductless split-systems. High-wall indoor units are located in each office, and the condensing units are mounted indoors behind the offices. No ventilation is currently provided.

The central offices in Bay B are served by a packaged split-system air handling unit. The indoor unit is located on a platform above the offices. The cooling coil is a direct expansion coil, with the air-cooled condensing unit located on the roof; the refrigerant is R-410A. The heating coil is fed from the low-pressure steam system, with a condensate return unit located on grade next to the offices. Outdoor air intake and relief air discharge are via louvered penthouses on the roof. All supply and return ductwork is routed above the ceiling and the platform.

The system also has a 5 hp centrifugal inline exhaust/relief fan located on the equipment platform. There is a Data Processing room located in the office block; it does not have any supplement cooling, and felt warm during the assessment.

The woodshop area in Bay B has an existing duct collection system. The system consists of six collection hose drops that feed into a main single duct. The duct runs out the east side of the building to the dust collector, located on grade. The extraction duct was measured at 16’-3” AFF where it crosses the main circulation path.

Also located in Bay B is the exhaust system for the forklift charging stations. It consists of an exhaust hood served by two exhaust fans. Both fans feed into a single duct that discharges through a louver at the building exterior. There is an air-curtain installed above one of the west-facing overhead doors in Bay B;

the air curtain does not have cooling or heating. The other three overhead doors in Bay B do not have air curtains.

The break room in Bay C does not have any air conditioning, ventilation or exhaust systems serving it.

There are two oven/ranges installed in the break room; they did not have range hoods or any other form of exhaust. The offices in Bay C are served by window-style air conditioning units. No ventilation is currently provided. The restrooms in Bay C each have a wall-mounted exhaust fan; heating is provided in the restrooms via steam fintube radiators. There is an air-curtain installed above one of the west-facing overhead doors in Bay C; the air curtain does not have cooling or heating. The other overhead doors in Bay C do not have air curtains.

The fitness-turned-storage room in Bay D is served by a window-style air conditioning unit; it does not have any ventilation. The adjacent server room does not have any cooling. The restrooms in Bay D are served by a mushroom-style exhaust fan located on the roof; heating is provided by steam fin-tube radiators. There is a condensing unit located on a platform above the restrooms that has been abandoned in place; a portion of the associated refrigerant piping has also been abandoned in place.

The steam service into the building is located in Bay D. The service enters the building below grade in a pit on the east side of the building before rising above grade. The pressure-reducing station and a condensate return unit are located here, accessible by standing on removable grating above the pit.

Electrical Existing Conditions

The service entrance equipment serving the warehouse is an indoor unit substation connected to #4/0 AWG medium voltage service entrance conductors. The conductors are installed underground and enter the building south-west of bay B. The service entrance equipment consists of the following components: a high voltage incoming section with an air interrupter switch enclosed inside a Square D metal enclosed switchgear; a 500KVA, 4160V to 208Y/120V Square D step-down transformer labeled T-829; and a double ended Federal Pacific type COP switchboard, one end has a 1000A main breaker and the other end has a 800A main breaker.

Each main breaker of the switchboard has a kirk key lock. The service entrance equipment was installed in the mid 1970s, following the removal of the original service entrance equipment. The equipment has several spare circuits and is in good condition. The two switchboards are each connected to an electric meter device, however the meters do not appear to collect any data.

The service entrance equipment feeds multiple downstream panelboards throughout the warehouse. The panelboards are of different manufacturers and types such as: Westinghouse type G22B panelboard, Cutlerhammer type PRL1 panelboard, Square D type NQOD panelboard, GE type NLAB panelboard, Siemens type S1 panelboard, and Federal Pacific type NBLP panelboard. Several panelboards were retrofitted and marked in accordance with the NEC. Most of these panelboards have spare circuits and are in good condition.

There are also several original panelboards that were not retrofitted, these panels were manufactured by General Electric, Westinghouse, and Federal Pacific. Westinghouse and Federal Pacific both ceased production of panelboards and overcurrent protection devices prior to the year 1997. These panels are mainly in Bay A and Bay D. Several are rated for 100A 208/120V, and feeds lighting and receptacles loads; and a couple are rated for 100A 480/277V, these panels are powered by a 208/120V to 480/277V step-up transformer and are used to power the overhead high bay light fixtures in bay D. These panelboards are old and are showing signs of deterioration, and replacement of electrical components can be expensive and hard to find.

The north portion of Bay A has three bus ducts hung below the acoustic drop ceiling. Each bus duct is a

208Y/120V, 400A Federal Pacific type plug-in bus duct; feeding power outlets through the space. The bus ducts are powered by Switchboard B of the unit substation through a 400A breaker, the ducts are in good condition and have spare capacity. Federal Pacific ceased production of bus ducts and bus plug switches in the mid 1980s, replacement of electrical components can be expensive and hard to find.

The warehouse has several fire protection systems, including a fire alarm control panel, mass notification systems, a containment control panel, and a transmitter panel. The fire alarm control panel is powered through a dedicated feeder out of the service entrance equipment, however other systems are powered from dedicated branch circuits in downstream electrical panelboards.

Fiber and copper connectivity enters the building underground at the corridor between the restrooms and break room, north of Bay C. Two 4” conduits have been installed to support fiber and copper service cables into the warehouse and also to provide a pathway for future cables. The telecommunication demarcation point is located at this location, including fiber splice enclosures and telephone punch down panels. From this location, fiber and copper is distributed to several NMCI telecommunication spaces throughout the warehouse.

Each NMCI telecommunications space has a dedicated 208/120V 100A panelboard to power telecommunications equipment and equipment within the space only, as required by the UFC. Each space also has a telecommunication grounding bar for grounding and bonding connections.