SOW_Upgrade_HVAC_Multiple_Facilities_-_Rev_00_2.pdf

S T A T E M E N T O F W O R K

For

VGLZ 152 068

Upgrade HVAC Multiple Facilities Selfridge Air National Guard Base, Michigan

Prepared by:

Thomas J. Resh

20 March 2019

STATEMENT OF WORK

FOR

Upgrade HVAC Multiple Facilities

The contractor shall schedule, mobilize and perform a complete construction project on multiple buildings in line with the engineering design for the Upgrade of Multiple HVAC Project – VGLZ 152068 at Selfridge ANG Base.

The contractor will provide all manpower and material to make all necessary repairs and upgrades the HVAC systems per the attached set of drawings, Statement of Work and specifications.

The drawings and design drawings provided by the government for this work are considered as reference only. The contractor and any subcontractors will perform a site visit, review and site assessments prior to bidding. This contractor will provide installation shop drawings for approval showing full installations of all HVAC systems. This will include all curbs and structural, HVAC duct path and removal of minor interferences. Removal of all HVAC system interferences will be by this contractor.

Contractor is responsible to execute all work effort in order to provide an acceptable construction project completion for the Upgrade of Multiple HVAC Project at Selfridge ANG Base.

The contractor will submit at Detailed Milestone Schedule within (4) weeks of award to be reviewed and approved by the Contracting Officer. This schedule will be a realistic schedule by the contractor that will take into account all site conditions for construction of the project and how it will be built on the calendar. Continuation of heating and cooling services, with minimal interruption to the buildings is required.

The tasks of this Statement of Work are as follows:

A. Mechanical

The general scope of the mechanical work is to upgrade the existing HVAC systems in each of the listed buildings due to failure, age of equipment and malfunction. With many of the buildings retrofitted with DDC controls, the existing DDC equipment controller and space temperature sensors will be reused to control new equipment. Any DDC controls or devices removed from service of the buildings shall be turned over to SANGB Mechanical HVAC personnel. The scope of work is per the following:

1. Building # 7:

The HVAC scope is to replace the existing air cooling unit located inside the Radio room, and associated microprocessor temperature controller and outdoor cooling condensing unit.

Demolition:

1. Radio room is conditioned by a 3-Ton ceiling-mounted air-cooled split type unit with integrated supply and return ceiling grilles.

2. Demolish the existing indoor evaporator unit and associated controls, piping, valves, etc.

3. Demolish the existing refrigerant and liquid lines completely starting from indoor cooling unit up to outdoor condensing unit.

4. Disconnect existing cooling condensate line and cap for future use. Existing cooling condensate receiver currently installed on wall shall remain for reuse.

5. Demolish existing microprocessor temperature control module installed on wall by entrance door.

6. Demolish existing outdoor condensing unit with associated piping, supports and controls. Existing housekeeping pad shall remain for reuse.

New Work:

1. Provide (1) new 3-Ton ceiling-mounted AC cooling unit, including integrated supply and return ceiling grilles, electric reheat and outdoor condensing unit. Install new units in the same location of demolished existing units.

2. Provide spring isolator type supports to suspend new cooling unit from existing structure.

3. Provide a new condensate pump with new system and replace existing. Connect new unit to existing condensate line in ceiling and condensate receiver currently located on wall.

4. Provide new microprocessor temperature control module and install at same location of old unit to be demolished.

5. Provide new refrigerant and liquid lines set with insulation for new AC unit, and route to new condensing unit outside. Use existing piping route to install new lines set to avoid disturbing existing systems in ceiling space.

6. Install new condensing unit outside on existing housekeeping pad.

7. No DDC Controls network tie-in work is required for the new AC unit.

2. Building # 15:

The HVAC scope is to eliminate and demolish the existing steam boilers system and associated heating and ventilation units serving the building. Cooling is to be provided for the whole space. A new gas-fired heating and cooling AHU will be installed to serve all spaces of the building.

Demolition:

1. Demolish (2) existing steam boilers and associated piping, valves, steam traps, exhaust flue vent and controls inside existing mechanical room.

2. Demolish (1) existing duplex condensate receiver & pumps and associated appurtenances.

3. Demolish all existing steam and condensate piping and associated valves, steam traps and supports throughout the building.

4. Demolish (3) existing heating and ventilation units currently installed in ceiling space, and cap existing branch ducts for future reuse.

5. Demolish (1) existing AC cooling unit in ceiling space, with associated outdoor condensing unit (Ex. ACU) and refrigerant gas and liquid lines. Cap existing branch supply ductwork for future use.

6. Demolish (3) existing steam unit heaters located in mechanical and control rooms with associated piping, valves and steam traps.

7. Demolish (2) existing steam unit ventilators located in ceiling space at the two entrance vestibules of the building with associated piping, valves and steam traps.

8. Existing toilets/lockers/break room cabinet exhaust fans installed in ceiling space shall remain in use.

9. Disconnect existing wall temperature sensors and DDC unit controllers from all demolished HVAC equipment and salvage for future reuse with new HVAC equipment.

1. Provide (1) new forced-air, high-efficiency, gas-fired furnace with a matching DX cooling evaporator coil, and install in existing mechanical room. Provide new furnace with a 12”Ø insulated outside air duct with motorized damper and 12”x12” outside air louver. Provide new AHU with a pleated type throwaway air filter box.

2. Provide (1) 5-ton outdoor condensing unit and install outside, adjacent to an existing ACU unit, on a new 4” housekeeping pad.

3. Provide new refrigerant gas and liquid insulated lines set, and route from new outdoor condensing unit to new AUH-15-1 DX cooling coil, located inside mechanical room.

4. Provide a new supply air main duct and route from mechanical room to existing spaces through plenum space above ceiling grid. Reconnect all existing branch ducts to new main supply duct. All new ducts shall be insulated. Modify existing conditions as needed to complete new work.

5. Provide a new return air main duct and route from mechanical room to existing spaces through plenum space above ceiling grid.

6. Provide (1) 2-kw electric unit heaters and install hanged from structure inside Mechanical room.

7. Provide (2) 2-kw electric unit heaters and install in ceiling at entrance vestibules.

8. Reuse existing wall temperature sensors and equipment DDC controllers with new HVAC equipment, and connect to existing building’s LGR250 DDC Panel.

9. Add additional DDC Controllers and components as required for new equipment.

3. Building # 18:

The HVAC scope is to upgrade the existing hot water heating system and recirculation pumps with new high-efficiency type condensing boilers. In addition, the existing mutli-zone air handling unit will be replaced with a new hot water heating and DX cooling indoor AHU with VFD and (5) VAV boxes with reheat coils. The existing return air fan, inside mechanical room and 50-ton, 4-stage air cooled condensing unit on roof, will be also replaced with new units.

Currently, the existing 50-ton roof condensing unit is being operated using 2 stages of cooling only (approx. 25 tons). The full 50-ton capacity was reported by maintenance to be never used to full capacity. The existing cooling system appears to be oversized to the actual building connected cooling load. Based on our design analysis and load calculations, the new HVAC system will be designed at approximately 30-Ton of cooling for the building.

Additionally, an existing rooftop unit (PRTU-1), currently serving AIS Test station was also evaluated for short-cycling operation issues. Per field verification of equipment and space served, the unit is rated for 27.5-Ton cooling capacity, and is oversized for the current loads and function for the space. Original design records showed that a 3 or 4-Ton RTU was originally designed for this space using a cooling only unit and duct-mounted hot water coil. Based on input from space users and some assumptions we made for calculations purpose, a 10-Ton rooftop will be recommended to replace the existing 27.5- Ton unit.

Demolition:

1. Demolish (3) existing hot water boilers (299 BMH each) with associated boiler pumps, secondary pumps, expansion tank, valves and portion of piping loop. Cap existing radiation loop piping for future connection to new system.

2. Demolish (1) existing Multi-zone air handling unit located inside mechanical room complete with associated piping, valves, zone dampers, ductwork, pneumatic controls, etc. Cap existing zone ductwork for reconnection to new system.

3. Demolish (1) existing ceiling-hung return air fan and cap existing main ductwork for reuse.

4. Demolish existing 50-ton cooling condensing unit located on the roof with associated piping and controls. Existing roof supports shall remain to support new system.

5. Demolish (1) existing hot water unit heater in mechanical room with associated piping, valves, controls, etc.

6. Disconnect existing DDC unit controllers from demolished equipment and salvage for reuse with new proposed HVAC equipment.

New Work:

1. Provide (2) new high- efficiency condensing type boilers (rated for 400 MBH each per new heating MBH load) with associated boiler pumps, valves, sensors, controls, expansion tank, air separator, intake and flue vents, etc. Install using existing housekeeping pads. Modify existing as required.

2. Rework primary/secondary piping loops inside mechanical room, and connect to (3) new inline secondary pumps. New HW secondary pumps shall be provided with redundant pumps installed in parallel configuration. Reconnect new secondary piping loops to existing radiators loop, new AHU-18-1 HW coil loop and new HW VAV reheat loop. Insulate all new and existing HW piping.

3. Provide (1) new indoor air handling unit (AHU) with VFD, HW heating coil and DX cooling coil and install inside existing mechanical room. New AHU will be sized to match the new cooling load (estimated at 30-Ton of cooling). Install new AHU inside mechanical room on existing housekeeping pad. Modify existing condition as needed to complete new work..

4. Provide (1) new 5-HP inline centrifugal type return air fan, with a VFD, and install in mechanical room ceiling. Reconnect to existing return air main ductwork and modify as needed. Provide a new relief air motorized damper and install at existing wall louver. Relief air damper operation will be interlocked with new AHU and return fan operation.

5. Provide (1) new 30-Ton air-cooled condensing unit ACU-18-1. Install on roof and route new refrigerant gas and liquid piping to new AHU-18-1 in mechanical room.

Route refrigerant piping using existing piping route to reduce interferences. Install new condensing unit ACU-18-1 on existing structural steel grillage and supports.

Contractor shall verify new unit weight and modify existing roof supports as required

(by a licensed Structural P.E.).

6. Reuse and rework existing zone ductwork and connect to (5) new VAV boxes with hot water reheat coils. Modify existing as necessary.

7. Provide (1) new hot water unit heater for mechanical room and connect to new hot water piping loop system.

8. Reuse existing equipment DDC controllers from demolished units to reuse with new

AHU, return fan, VAV boxes, boilers and pumps. Reconnect controls to existing

ALC’s building DDC Panel. Reuse space temperature sensors and reconnect to new

VAV boxes.

9. Add additional DDC Controllers and components as required for new equipment.

AIS Test Station – Ex. PRTU-1 on roof:

1. The existing rooftop unit currently installed on roof appeared in good condition and with no signs of damage. The unit has a capacity of 27.5 Tons and has (2) stages of cooling.

2. During owner laboratory testing, the AIS equipment release instantaneous high amount of heat. No information was available on equipment heat dissipation, so assumptions were made on heat gain load to perform load calculations and estimate the cooling load.

3. EX. PRTU-1 is reported to cycle at a high rate, whether or not there is owner testing, and at 27.5 tons capacity, the unit is oversized for the amount of heat load released.

4. Original 1991 as-built design records shows that a 4-Tons unit was designed to condition this space. No records are available for installing the 27.5-Tons unit currently installed.

5. Recommendations:

o The existing PRTU-1 capacity of 27.5-Tons appears to be oversized for the space heat loads. The unit is cycling with only (1) stage of cooling running.

o Demolish existing rooftop and remove from base. Employ all proper environmental procedures for refrigerant and solid waste.

o Demolish existing hot water duct heating coil with associated piping, valves and controls.

o Provide a new 10-ton rooftop unit with gas heating and DX cooling (2-stage) and install on roof to reconnect to existing ductwork. Modify existing ductwork mains as required to connect to new AHU and rebalance for new air flow capacity.

o Reuse existing DDC controls and reconnect new RTU-18--1 to existing DDC building panel.

o Add additional DDC Controllers and components as required for new equipment.

4. Building # 24:

The HVAC scope is to eliminate and demolish the existing steam boiler system and associated heating and ventilation units, unit heaters, piping, valves and traps serving the building. In addition, various exhaust fans will be completely demolished and few to be replaced with new. Install two (2) NEW forced-air, gas-fired furnaces to provide heating and cooling to the office and locker areas (rooms 1-9). The rest of the spaces also will be provided with new heating, ventilation and exhaust (no cooling).

Demolition:

1. Demolish (2) existing steam boilers complete with associated piping, valves, steam traps, condensate pumps and receiver, pneumatic controls and flue exhaust ducts up to the roof.

2. Demolish (1) existing HV-1 air handling unit, located in boiler room ceiling, complete with associated hangers, supports, dampers, pneumatic controls, and steam heating zone coils including piping, valves, traps and accessories. Cap existing zone ducts for future reuse.

3. Disconnect existing HV-1 outside air ducts from wall louver. Cap existing wall louver and return air ducts for future reuse.

4. Demolish (2) existing exhaust fans, REF-1 & 2, serving existing toilet and electrical rooms adjacent to Rooms 1-9. Disconnect exhaust ducts and cap for future use.

5. Existing gas-fired unit heater installed inside mechanical rooms shall remain.

Demolish existing electric fin tubes.

6. Demolish all existing split and window type air conditioning units currently installed in rooms 1-9: (6) window units, (6) indoor evaporator units and (3) outdoor condensing units. Patch all wall openings to match existing construction. Follow solid waste and refrigerant recovery process.

7. Demolish (1) existing MAU-1 serving Work Bay area complete with hangers, supports, piping, valves, coil, traps, etc. Disconnect outside air duct and cap wall louver for reuse.

8. Demolish (4) existing fan-powered steam unit heaters located in Work Bay area complete with piping, valves, hangers and supports.

9. Demolish (1) existing roof-mounted exhaust fan, REF-3, serving Work Bay area with associated speed controls and accessories.

10. Demolish (1) existing MAU-2 unit, serving rooms 11-16, complete with hangers, supports, piping, valves, coil, traps, etc. Disconnect outside air duct and cap wall louver for reuse. Disconnect existing supply air ducts and cap main duct for future reuse.

11. Demolish (1) existing scavenger exhaust fan, REF-4, serving rooms 12-15, with associated exhaust ducts, grilles, dampers and controls. Patch roof openings to match existing construction.

12. Demolish (4) existing CO exhaust fans EF-3, 4, 5 & 6 with associated discharge air dampers and controls. These fans were used for Carbon monoxide exhaust in

Rooms 12-15.Patch roof openings to match existing construction.

13. Demolish (6) existing roof-mounted exhaust fans REF-5, 6, 7, 8, 9 & 10 with associated accessories and controls. Temporarily cap roof openings for reuse.

These fans were used for general exhaust in Rooms 11-16.

14. Demolish (6) existing fan-powered steam unit heaters, located in rooms 11-16, complete with steam piping, valves, traps, controls, etc.

15. Demo existing Goodman furnaces in place. Disconnect and terminate all gas and electrical and cap back to the source.

1. Provide and install (2) new gas-fired Goodman furnaces. See mechanical schedule for sizes. Modify existing gas lines inside mechanical room to accommodate the gas loads for new and existing equipment and connect NG line to each furnace.

2. Provide (2) new matching DX cooling coils (cased to match existing) and install on existing relocated gas-fired furnaces. Provide new refrigerant gas and liquid lines to

(2) new 3.5-Ton & 3-Ton outdoor condensing units ACU-24-1 & ACU-24-2.

3. Connect new supply and return ducts from relocated furnaces to existing branch ducts and modify as required. Provide 12” outside air insulated duct with a motorized damper for each AHU, and connect to return air main duct. Connect new outside air ducts to existing wall louver and seal unused portions of louver.

4. Provide (2) new DDC unit controllers and (2) new space temperature sensors, one for each AHU, serving Rooms 1-9. Connect to existing building’s ALC DDC panel.

5. Provide (1) new roof-mounted exhaust fan REF-24-1, and reconnect to existing exhaust duct serving Electrical closet.

6. Provide (1) new roof-mounted exhaust fan REF-24-2 and reconnect to existing exhaust duct serving existing Toilet rooms.

7. Provide (1) new gas-fired H&V unit MAU-24-1 to serve Work Bay area and install in

Work Bay truss space near location of demolished unit as possible. Provide new hanging support rods and vibration isolators. Connect new gas line to new unit.

Connect new unit to outside air louver and modify ductwork as needed. Provide new discharge air supply duct with (2) square elbows and grilles.

8. Provide (1) new DDC unit controller and (1) new space temperature sensor for new

MAU-1 and connect to building DDC panel.

9. Provide (4) Infrared gas-fired Tube heaters (30-Feet and 75 MBH each) to serve

Work Bay area and install in high ceiling per manufacturer requirement. Run 3/4” gas line to each IR heater and provide approved flue venting for each through the roof. Interlock IR heaters operation with Work Bay doors operation.

10. Provide (1) new gas-fired make air unit MAU-2 (w/ 100% OA and 236 MBH) to serve Rooms 11-16 and install outdoor on roof of room 16. Connect new gas line to new unit. Reconnect new MAU-2 unit to existing supply ducts by penetrating outside wall panels, and modify as needed.

11. Provide (1) new DDC unit controller and (1) new space temperature sensor for new

MAU-2 and connect to building DDC panel.

12. Provide (6) new roof-mounted exhaust fans (1/4-HP each) to replace demolished

REF-5, 6, 7, 8, 9 & 10 and serving Rooms 11-16. Interlock fans operation with new

MAU-2 operation.

13. Add additional DDC Controllers and components as required for new equipment.

5. Building # 39:

The HVAC scope in this building is to demolish (1) existing hot water heating boiler system and associated supply recirculation pump, valves, sensors and flue exhaust venting. The system will be replaced with (2) new high efficiency condensing boilers system. In addition, the existing hot water supply and return piping loops will be reconfigured with the new boiler system for primary/secondary piping configuration. Re-use existing expansion tank in the new system. All new piping by this contractor.

Demolition:

1. Demolish (1) existing hot water boiler (385 MBH) with associated piping, valves, sensors, controls and flue exhaust vent duct through roof.

2. Demolish (1) existing inline hot water supply pump (3/4-HP) and cap supply and return hot water piping for future connection .

3. Disconnect (1) existing floor-mounted expansion tank for reuse on the new system

4. Cap existing gas line for reuse.

5. Disconnect existing DDC unit controller for reuse with new boilers.

1. Provide (2) new high efficiency condensing type boilers (rated for 155 MBH, 40PSI system pressure and 95% efficiency each) with associated boiler pumps, valves, sensors, controls, ( reused) expansion tank, air separator, etc. Install on existing housekeeping pad. Modify and expand pad as necessary to install new boilers.

2. Rework primary/secondary piping loops inside mechanical room, and provide new

(1) new secondary loop circulation pump to replace existing. Reconnect new piping loop to existing secondary hot water piping. Insulate all new and existing piping.

3. Route new boilers combustion air and flue vents PVC piping through new side wall vent penetration. Use same type concentric wall outlet standard to SANG Base buildings. Repair, cap patch roof opening. Modify and patch roof opening as necessary.

4. Reconnect existing hot water unit heater to new hot water heating system.

5. Reuse existing boiler’s DDC unit controller with new boilers, and reconnect new heating system to building DDC panel.

6. Building # 129:

The HVAC scope is to completely demolish existing hot water heating boiler system, recirculation pumps, valves, piping, sensors, and flue exhaust ducts through roof. The existing hot water system will be upgraded with a forced-air, gas-fired and DX cooled air handling system. No DDC controls tie-in to network is required for this building.

Demolition:

1. Demolish (2) existing hot water boilers complete with associated boiler pumps, piping, valves, sensors, controls and flue exhaust vent duct through roof. Cap existing gas lines for reuse.

2. Demolish (1) existing inline hot water supply pump with valves, controls and piping.

3. Demolish (1) existing hot water unit heater located inside mechanical room.

4. Drain and cap all existing hot water piping and cap above crawl space level.

5. Demolish all existing hot water heating radiators and unit heaters inside the building.

6. Demolish and remove from site, existing cooling unit installed above ceiling space and disconnect all refrigerant piping and ducts. Demolish supply and return ducts above the ceiling space. Follow solid waste procedures FOR ALL demo work.

7. Demolish all existing supply and return air grilles inside the building.

8. Demolish and salvage (1) existing 5-ton outdoor condensing unit and associated piping valves and controls.

9. Existing split cooling indoor and outdoor units serving Elec/Comm. room shall remain in use.

10. Existing wall exhaust fan in mechanical room shall remain in use. Disconnect fan operation interlock with demolished boiler pumps. Space temperature operation shall remain in use.

New Work:

1. Provide (1) new high-efficiency gas-fired furnace with associated cased DX cooling evaporator coil and filter box. Install new unit in existing mechanical room.

2. Provide (1) new 3.5-ton condensing high efficiency and R-410 unit and locate outside. Provide and connect to new air furnace DX cooling (with matched case) coil.

3. Provide 12ӯ outside air duct with motorized dampers and route through side wall.

Connect new OA duct to new AHU return air duct.

4. Route new supply and return air ductwork to building spaces and connect to new supply and return air grilles. Insulate all new ductwork.

5. Provide (1) 2-KW electric unit heater and install in existing mechanical room.

6. Provide (3) 1.5-KW wall unit heaters and install in toilet rooms and entrance vestibule.

7. Building # 1439:

The HVAC scope is to replace (1) existing building-mounted air cooling unit with new. The existing supply and return grilles installed inside the building shall remain in use. No information or documentation was available regarding the size of the existing cooling unit.

For the existing supply and return grilles sizes, it was only determined that the size ranges from 3.5 to 6-Ton of cooling.

Demolition:

1. Demolish (1) existing ComPac I air cooling unit installed on the back wall of the building.

2. Demolish (1) existing thermostat controlling the cooling unit and installed inside the building.

3. Existing supply and return grilles shall remain in use.

New Work:

1. Provide (1) new 3.5-ton air-cooled cooling unit to replace existing and install on back of building to fit existing opening.

2. Provide an adapter kit on wall to reuse existing supply and return openings. Connect new AC unit to adapter kit.

3. Provide new digital type thermostat and connect to new AC unit and any existing building safety controls or sensors.

4. No DDC network controls were found in this building.

B. Electrical

8. Building # 7

Existing Conditions

1. Units AC-1 and ACU-1 are fed from distribution panel DP-CP located in mechanical room 1098 adjacent to command room. DP-CP is a 225A, MCB, 208/120V, 3ph, 4w panel.

Demolition

1. Disconnect and remove all conductors and circuit breakers to AC-1 and ACU-1. The existing conduit from DP-CP to each unit shall be reused.

New work

2. Provide (2) new three phase circuit breakers including new conductors from panel DP-CP to new AC-7-1 and ACU-7-1.

9. Building # 15

Existing Conditions

1. The main distribution panel MDP is a 400A, MCB which feeds the building with a 208/120V, 3PH, 4W service. MDP feeds panels PP-1, Simulator panel and RP-M15.

2. Boilers 1 & 2 and associated feed pumps and (3) unit heaters are fed from RP-M15 in the boiler room. AH-2 through AH-6, AHU-1 and CU-1 are fed from PP-1.

Demolition

1. Disconnect and remove conductors associated with Boiler 1. Reuse the existing conduit.

2. Disconnect and remove all conduit and wire associated with Boiler 2 and associated feed pumps and (3) unit heaters, (3) H & V units, AH-2 through AH-6, AHU-1 and

CU-1 back to source.

3. Disconnect panel RP-M15 (100A, MLO, 208/120volt, 3ph, 4w, 12 circuit) panel board from 100A, 3p fusible switch in existing MDP and replace with a new (100A, MLO, 208/120volt, 3ph, 4w, 30 circuit) panel board.

New Work

1. Provide new circuit breakers as indicated on the RP-M15 panel schedule.

2. Reuse the existing feeder from MDP to feed the new panel RP-M15.

3. Extend (6) existing 20A, 1p circuits to the new panel RP-M15 (same location).

4. Provide new conduit and wire to mechanical equipment.

10. Building # 18

1. The building is fed with an 800A, 480/277V, 3ph, 4W system feeding MCC-1. MCC- 1feeds the 480volt mechanical equipment and branch panel transformers (480- 208/120volt).

2. MZ-1, RF-1, PRTU-1 and ACU-1(50ton) are fed from MCC-1. Boilers 1, 2 &3 are fed from MLC-M18.

Demolition

1. Disconnect and remove conductors associated with Boilers 1 and 2, PRTU-1 and ACU-1 back to source. Reuse the existing conduits, the conduits will be extended to new equipment locations.

2. Disconnect and remove all conduit and wire associated with Boiler 3 including pump, MZ-1, RF-1 back to source.

3. Disconnect panel MLC-18 in the mechanical room, label switch in MCC as spare.

New Work

1. Reuse an existing 200A, 3P fusible switch in MCC-1 to feed AHU-18-1, ACU-18-1 and PRTU-18-1 via wire way and (3) fusible disconnect switches.

2. Reuse the existing 30A, 3P fusible switch in MCC-1 to feed RF-18-1

3. Reuse circuit breakers made available by demolition in MLC-M18 to feed (2) boilers and (3) associated pumps and UH-18-1.

4. Provide new conduit and wire to the mechanical equipment.

5. Provide a new panel “MLC-18”, and feeder from a spare 100A-3P switch in the MCC.

6. Provide dedicated 120 volt circuits for redundant pumps CP-18-1A, 2A, 3A from new panel MLC-18.

11. Building # 24

Existing Conditions

1. The building is fed with an 800A, 480/277V, 3ph, 4w system feeding main switchboard MSB. MSB feeds a transformer with a secondary voltage of 208/120V, 3ph, 4w which feeds DP-1. DP-1 distributes 208/120volt power throughout the building to other branch panels.

2. MAU-1, MAU-2, EF-3 through 6, REF-1, 2 3 and H &V-1 are fed from MSB.

3. Test cell exhaust fans REF- 4, 5, 6, 7, 8, 9 and EF10 are fed from RP-B.

4. In the Work Bay Area there are (2) furnaces (FCU-1 & 2) which are fed from RP-B.

Demolition

1. Disconnect and remove the conductors associated with MAU-1, MAU-2, REF-1, 2, 3, 4, 5, 6, 7, 8, 9, 10 the existing conduits will be reused.

2. Disconnect and remove all conduit and wire associated with EF-3 through 6 (CO system), Furnace 1, 2 and H &V-1, UH-1 thru 6 (test cells), (4) UH-2’s (test cells), (2) UH-3’s (test cells) and (4) UH-1’s (open work bay), CU-1, 2, 3 including associated AC units back to source.

New Work

1. Install New furnaces FCU-1 & 2 (AHU-24-1, 2) provide new conduit and wire from RP-B reuse existing circuit breakers made available by demolition.

2. Provide (2) new 50A, 2P circuit breakers in DP-1 and feed new ACU-24-1 & 2 and provide new conduit and wire.

3. Reuse the existing circuit breakers in MSB feeding MAU-24-1 & 2 and conduit, provide new conductors.

4. Reuse the existing circuit breakers in RP-B to feed new REF-24-1 (electrical room) & 2 (toilet room), REF-24-5 thru 10 (test cells) and provide new conduit and wire.

5. Reuse existing circuit breakers made available by demolition in RP-B to feed IRH-1 thru 4 and new conduit and wire.

12. Building# 39

1. The building is fed with a 400A, 208/120V, 3ph, 4w system feeding panel LD-1 sections 1 and 2 and panel LI.

2. Boiler 1 and P-1 are fed from panel LI and LD-2 in the boiler room.

Demolition

1. Disconnect conduit and wire to the boiler B-1 and extend to new boiler location.

2. Disconnect and remove conduit and wire to pump P-1.

1. Reuse the existing breaker in the boiler room panel LI to feed Boiler B-39-1, extend the existing conduit and wire.

2. Provide a new 3-pole circuit breaker in LD-1 to feed pump CP-39-1 and new combination starter, provide new conduit and wire.

3. Reuse the existing circuit breaker in LD-1 to feed new boiler B-39-2, provide new conduit and wire.

4. Provide new 15A-3P circuit breaker in LD-1, new combination starter and conduit and wire to feed redundant pump CP-39-1A.

13. Building # 129

1. The building is fed with 208/120V, 3ph, 4w is distributed throughout the building via LP-B (225A, MCB) and LP-A (200A, MCB) via a tap box outside the building adjacent to both panels.

2. The Boilers and associated pumps are fed from LP-A located in the boiler room.

Demolition/New Work

1. Disconnect and remove all conduits and wire associated with Boilers 1 & 2, P-1 and

UH-1.

2. Disconnect and reuse the conduit and wire from condensing unit CU-1 for new ACU- 129-1.

3. All existing fluorescent lay-in type light fixtures shall be disconnected, cleaned, re-lamped and re-installed in new lay-in ceiling.

4. All existing ceiling mounted smoke detectors shall be relocated to new lay-in ceiling location.

5. All abandoned communication cables and conduits shall be removed.

6. All active communication cables above the existing ceiling shall be re-supported from the structure above.

New Work

1. Provide a new circuit breaker in LP-A to feed UH-129-1.

2. Extend existing lighting circuits to relocated fluorescent lay-in type light fixtures.

14. Building # 1439

1. The building is fed from RP-1439 a 100A, MCB, 208/120V, 3ph, 4w panel. RP-1439 feeds all loads within building 1439.

Demolition

1. Disconnect and remove conductors feeding the HVAC Unit including the circuit breaker. The existing conduit will be reused.

1. Provide a new 3-pole circuit breaker in RP-1439 and provide conductors to new

HVAC-1439-1.

15. General repair and upgrades guidelines include, but are not limited to the following specifications and regulations:

a. APPLICABLE STANDARDS: Latest published versions shall be used.

b. Mechanical systems – ASHRAE and SMACNA Standards, Including ASHRAE 90.1.

c. National Electric Code, NFPA No. 70

d. National Electric Safety Code (ANSI C2).

e. National Fire Protection Association (NFPA 101) Life Safety Code.

f. International Building Code (IBC).

g. Uniform Federal Accessibility Standard (UFAS)

h. International Mechanical Code (IMC).

i. International Plumbing Code (IPC).

j. Applicable State, City and County codes and regulations.

k. ANG Design Policy -Tab D, ANG ETL 01-1, Jan 2003 (Revised March 2004)

l. Vision 2020 standards

m. Occupational Safety and Health Administration standards

n. Michigan Occupational Safety and Health Administration Standards

2. Stamped drawings by a Professional Engineer (P.E.) or a Registered Architect (R.A.) are required for this project for any structural overhead installations or platforms added. All hanging items and RTU curbs and unit installations will require a (P.E.) Stamp as well by this contractors engineer.

3. There will be a site visit, prior to award to allow for site investigation. Any site visits post award shall be coordinated with the Government.

4. Record drawings may be provided to the contractor as a courtesy at the discretion of the Government, but their accuracy is not guaranteed. The contractor shall do his own field investigations of the utilities and other items in the area and base his work accordingly.

The Government assumes no responsibility for any conclusions or interpretations made by the Contractor based on the information made available by the Government. Nor does the Government assume responsibility for any understanding reached or representation made concerning conditions which can affect the work by any of its officers or agents before the execution of this contract, unless that understanding or representation is expressly stated in this contract. These record drawings bear no such representation or understanding.

5. Contractor shall conduct an intensive field survey of all existing conditions. The contractor should survey existing conditions and correlate their work requirements accordingly.

Contractor shall verify all dimensions, calculations and code requirements for all elements of work.

6. The disturbance of Asbestos-Containing Building Material (ACBM) is not anticipated during this project other than noted areas. However, if suspected ACBM is encountered, work in the immediate vicinity must stop and the Contracting Officer (KO) notified. After consultation with base personnel, the KO will direct further action to be taken. Work should proceed uninterrupted in unaffected areas of the project.

7. Based on the age of the buildings at Selfridge ANG Base, there is the potential for the presence of lead on painted surfaces. Best management practices must be employed to minimize dust and adequately protect workers from LBP exposure in accordance with OSHA and MIOSHA standards.)

8. Period of Performance shall be (400) calendar days from notice to proceed. The contractor will provide a detailed milestone schedule of construction with dates for HVAC changeover work that will accommodate the need s of the existing HVAC systems for continuation of services.

9. The contractor will schedule and repair systems that are needed to be replaced in order to maintain the heating and AC functions of all building with priority given to any failing systems so that HVAC in any building in the contract is not interrupted. Eg Building 18 boiler replacement.

10. The contractor shall submit to the Contracting Officer a coordinated schedule indicating the sequence of operations for review prior to commencement of the work. Currently base is open from Monday thru Friday 0700-1700 only. Any work outside these hours and on Federal Holidays must be requested at least 72 business hours in advance and then approved by the contracting officer. The federal holidays are listed below:

a. January 1st – New Year’s Day

b. Third Monday in January – Martin Luther King Jr. Day

c. Third Monday in February – Washington’s Birthday

d. Last Monday in May – Memorial Day

e. July 4th – Independence Day

f. First Monday In September – Labor Day

g. Second Monday in October – Columbus Day

h. November 11th – Veterans Day

i. Last Thursday in November – Thanksgiving Day

j. December 25th – Christmas Day

11. The facilities will be operational and occupied during this project. The Contractor shall fully cooperate with the other contractors and with Government employees and shall carefully adapt scheduling and performing the work under this contract to accommodate the additional work (of others), heeding any direction that may be provided by the Contracting Officer. The Contractor shall not commit or permit any act that will interfere with the performance of work by any other contractor or by Government employees.

12. Egress: Do not close or obstruct walkways, corridors, or other occupied facilities without written permission from the contracting officer.

13. Life Safety

a. The contractor will have pre-task safety plans in place for all inspection work.

These PTP will be reviewed and approved by the contractor’s safety committee prior to any site visits.

b. The contractor will have an escort at all times and shall exercise due care and extreme caution on all site locations. The contractor will assume ALL power systems are live and active and may require full lockout procedures, fall protection and confined space safe practices to proceed.

c. This contractor is not authorized to take any unnecessary risks or have people onsite who do not have knowledge of the risks associated with the work, such as:

electrical shock, fall hazards, rotating machinery, confined space and methane gas hazards.

14. Security Requirements

Access and General Protection/Security Policy and Procedures. This standard language is for contractor employees with an area of performance within Government controlled installation, facility, or area. The contractor shall comply with all applicable installation/facility access and local security policies and procedures, which may be obtained from the Contracting Officer’s Representative (COR). The contractor shall also provide all information required for background checks to meet installation access requirements to be accomplished by the local installation’s Security Forces, Director of Emergency Services or local Security Office. The contractor shall ensure compliance with all personal identity verification requirements as directed by DoD, HAF and/or local policy. Should the Force Protection Condition (FPCON) change, the Government may require changes in contractor security matters or processes.

For Contractors that do not require CAC, but require access to a DoD Facility and/or Installation.

Contractor and all associated sub-contractors employees shall comply with adjudication standards and procedures using the National Crime Information Center Interstate Identification

Index (NCIC-III) and Terrorist Screening Database (TSDB) (AFI 31-101 and AFI 10-245), applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative), or, at OCONUS locations, in accordance with status of forces agreements and other theater regulations.

AT Level I Training. This standard language is for contractor employees with an area of performance within a Government controlled installation, facility or area. All contractor employees, to include subcontractor employees, requiring access Government Installations, Facilities and Controlled Access areas shall complete AT Level I awareness training within 10 calendar days after contract start date or effective date of incorporation of this requirement into the contract, whichever is applicable. Certificates of completion for each affected contractor employee and subcontractor employee will be maintained by the COR or Antiterrorism Representative. AT level I Awareness training is available at the following website:

http://jko.jten.mil