Attachment 2 - Specifications.pdf

UNCLASSIFIED

Statement of Work May 23rd, 2025 Construct and Install DOAS to provide ventilation air for the Chancery Basement Area Page 1 of 16 US Embassy – Madrid, Spain

STATEMENT OF WORK

FOR

Dedicated Outside Air Handling Unit to Provide Ventilation Air for Chancery Basement Area

For

US Embassy, Madrid, Spain

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CONTENTS:

1.0 Introduction

2.0 Project Work Specifics

3.0 General Requirements

4.0 Construction Services

5.0 Contract Administration

6.0 Responsibilities of the Contractor

7.0 Project Schedule

8.0 Security Clearances

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1.0 INTRODUCTION

1.1 Overview

The U.S. Department of State (DOS), Overseas Buildings Operations (OBO) requires construct/install Dedicated Outside Air Handling Unit (DOAS) and conduits to provide ventilation for the Chancery Basement Area at the U.S. Embassy in Madrid, Spain. The work will include General Work Area (GWA) Basement floor and outside ground area, only.

The U.S. Embassy is a 7-story building located in Calle de Serrano, 75, Salamanca, 28006 Madrid, Spain. Facility Management, Financial Office and Commissary spaces are in the Basement floor of the Embassy building.

1.1.1 Existing Heating and Cooling Systems for the Basement Area

The Basement Area is served by 4-pipes fan coil units (FCUs) which provides cooling and heating only.

1.1.2 There is NO ventilation (outside) air for the Basement Area.

1.1.3 Partially designated area of the Basement serves as Safe Area. The Safe Area is served by supply and exhaust fan located on the lower roof level, above the Consular Area. The fans are ducted with supply/exhaust ducts, supply diffusers and exhaust grilles to the Safe Area spaces.

1.1.4 DOCUMENT SUBMITTAL PACKAGE. Submit during the bid, document submittal package that includes:

1.1.4.1 Product Data: Manufacturer’s data sheets on each product to be used, including:

1.1.4.2 Create concepts and sample material.

1.1.4.3 Submit manufacturer’s installation instructions, including preparation, storage, and handling requirements.

1.1.4.4 Shop Drawings:

1.1.4.4.1 Show complete layout and location of the area, including required

DOAS to provide ventilation air for the Chancery Basement Area Page 4 of 16 clearances. Include site layout drawings or any other plans required for this project.

1.1.4.4.2 Show typical details of assembly, erection, and anchorage.

1.1.4.4.3 Bill of material to be installed, materials provided by the contractor must be approved before prefabrication and installation.

1.1.4.5 Complete finalized Work Plan including Critical Path Method (CPM) schedule.

2.0 PROJECT WORK SPECIFICS

Project Work Specifics - Construct/install DOAS unit to provide ventilation (outside) air for the Chancery Basement Area.

2.1 SCOPE OF WORK

The Scope of Work comprises Supply, Installation, Testing & Commissioning of Ventilation System for the Chancery Basement Area.

The Basement Area shall be operational during the construction. Contractor shall provide phasing plan for the construction to maintain functional offices.

The project shall be based on the following conditions:

CLIN1 : Installation of AHU basement

2.1.1 Outdoor Conditions shall be met as follows:

Winter Outdoor dry bulb temperature: -5°C, Summer Outdoor dry bulb temperature: 40°C, Summer Outdoor wet bulb temperature: 19.4°C,

2.1.2 The areas of the building that require work under this contract are General Work Area (GWA) only. There will be NO work performed or adjacent to the Control Access Area (CAA).

2.1.3 Provide one (1) new Dedicated Outside Air Unit (DOAS), located on ground by the Chancery building.

DOAS must comply with EU standards.

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Basis for the DOAS is listed below, however, similar RTUs from other manufacturers with same or better performance and efficiencies shall be considered:

1. Daikin

2. RHOSS

3. CARRIER

2.1.4 Common Electrical Requirements

- The Contractor must provide construction services for connection to the existing electrical system.

- The Contractor is responsible to check the adequacy of the existing power available for proper operation of the new DOAS. Electrical upgrade, including new panels, breakers, wiring maybe required.

Contractor to provide if necessary.

- Current power supply is: 380 volts / 3 phase / 50 Hz.

- The Contractor is responsible to check the adequacy of the existing power available for proper operation of the new terminal boxes electric coils. Electrical upgrade, including new panels, breakers, and wiring may be required.

- Electrical transformers will be required to accommodate electrical power for the new unit.

- Main Power distribution is in the Basement of the Chancery. Sub-panels are located throughout the building.

- The Contractor must ensure that all existing electrical circuits are protected from being damaged during demolition work. If existing wiring circuits are damaged or affected/ impacted by any parts of the project, the Contractor shall provide the necessary resources to bring the system back to its original condition.

- Galvanized Rigid conduit shall be used.

- If walls/slab core drill is required, cores shall be sealed with fireproof caulking to prevent water and air from moving between the floors and outdoor.

2.1.5. Common Structural Requirements

- The Contractor shall provide a 250 mm thick reinforced concrete pad to support the mechanical unit.

- The concrete pad shall extend a minimum of 760 mm (2.5 ft) beyond the DOAS footprint on all sides.

- Reinforcement shall consist of 13 mm diameter deformed bars (#4) spaced at 250 mm on center each way, placed at the mid-depth of

DOAS to provide ventilation air for the Chancery Basement Area Page 6 of 16 the slab. Provide a 75 mm concrete cover at slab edges.

- Provide sawcut control joints to control shrinkage cracking.

- Sawcuts shall be a minimum of 60 mm deep, placed at the centerline in both the longitudinal and transverse directions of the pad.

- Concrete shall have a minimum compressive strength of 20 MPa at 28 days.

- The DOAS shall be mechanically anchored to the pad in accordance with the manufacturer’s requirements.

- Provide a minimum of three 19 mm diameter stainless steel anchor bolts per long side, or as otherwise specified by the equipment supplier.

- Prior to concrete placement, subgrade shall be compacted to at least 95% of the Modified Proctor maximum dry density (ASTM D1557).

- Contractor may place a granular subbase layer (e.g., crushed stone) as needed for leveling and drainage improvement.

- The DOAS ductwork shall be supported from the slab as required for stability and alignment.

- The Contractor shall repair any damage to existing walls, slabs, or adjacent structures caused during construction.

- Take care to avoid undermining existing foundations of adjacent structures during excavation or slab preparation.

- Finish the concrete pad with a medium broom texture, perpendicular to the primary access direction, to provide slip resistance.

2.1.6 Common Architectural Requirements

- The Contractor shall protect the existing ceiling and tiles. If any damage occurs, Contractor to repair to match existing ceiling and walls.

2.1.7 Common Life Safety Requirements

- The Contractor shall install duct smoke detection in the main exhaust duct air to shut down the unit in case of emergency.

- The Contractor shall reuse and reconnect the existing ceiling smoke detectors if affected by the project. There is no sprinkler system in the Basement Area.

2.1.8 Common Mechanical Requirements

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2.1.8.1 DOAS Requirements

- DOAS shall be 100% Outside air unit with heat recovery wheel and CO2 demand control ventilation with the following sections: (1) Exhaust fan with VFD; (2) Heat recovery wheel; (3) Filter section with two filters MERV12 & MERV14, (4) Heating coil; (5) Cooling coil, (6) Supply fan with VFD.

- DOAS shall be sized as follows:

• Supply air flow (SA) – 950 l/s (2000 cfm)

• Supply fan 950 l/s at external static pressure (ESP) of

375 Pa (1.5”)

• Cooling coil – 950 l/s (2000) cfm select coil with

30%PG. Cooling coil capacity is based without heat recovery wheel.

TH – 25 kW (85,000 BTU) SH – 20 kW (72,000 BTU) EAT (DB) – 40oC (105oF) EAT (WB) – 19.8oC (67.8oF) LAT (DB) – 22oC (72oF) LAT (WB) – 15.4oC (59.8oF) EWT/LWT – 7.2oC/12.7oC (45oF/55oF)

• Heating coil – 950 l/s (2000 cfm). Heating coil capacity is based without heat recovery wheel.

TH – 30 kW (105,000 BTU) EAT (DB) – (-)5oC (23oF) LAT (DB) – 22oC (72oF) EWT/LWT – 75oC/64oC (170oF/150oF)

• Provide 3-way valves at each heating and cooling coil.

Connect DOAS condensate drains to the closest available drain on ground.

• Exhaust air flow at 950 l/s at external static pressure (ESP) of 125 Pa (0.5”)

• Supply and exhaust fans with VFDs.

- The Contractor shall provide supply and return duct static pressure calculations to confirm external static pressure for the supply/exhaust fans.

- The Contractor shall install isolation mechanisms and

DOAS to provide ventilation air for the Chancery Basement Area Page 8 of 16 acoustic insulation around the equipment, as required to ensure noise and vibrations in the occupiable spaces do not exceed the following:

• External noise levels at the site boundary of the facility shall comply with the host country’s noise laws and regulations. When local standards do not exist, noise shall not exceed 55 dB (daytime) and 45 dB (nighttime) using the “A-Weighted Sound Level.”

• Internal noise levels within buildings shall not exceed RC-35N in residences per ARI Standard 885-90.

• Acoustic Insulation screen (wall) around the unit maybe required to accommodate the noise level requirements

- DOAS shall be selected to give rated capacity with the ambient temperature from -5oC to 40oC.

- DOAS coils tubes and fins shall be copper/copper or copper/aluminum, coated with phenolic epoxy coating.

Microchannel coils are not allowed.

- Contractor to provide the following sensors in the DOAS

• TS sensor at the outside air intake.

• TS sensor at the return/exhaust duct

• TS sensor before and after each coil (cooling and heating)

• TS sensor at supply duct.

• Freeze stat sensor after the filters before the coils (for safety).

• Supply and exhaust/relief duct static pressure (PT) sensors to control fan speed.

• CO2 sensor at the exhaust duct

- Supply and outside air ducts shall be insulated with minimum 2.0” (50 mm) foil back fiberglass insulation.

Outside-located ducts or exposed ducts in space shall be provided with aluminum jacketing.

- Relocation of existing air equipment in the area where the Ahu is going to be installed. The drainage also needs to be moved.

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2.1.8.2 Common BAS Control Requirements

- DOAS shall come with a factory mounted native BACnet controller to implement DOAS sequence of operation. The controller shall function completely standalone and come with BACnet/IP for plug and play integration into a Building Automation System. Any additional software required to configure and/or modify the controller shall be provided and handed over upon completion. Any required Licenses, miscellaneous cables, dongles, converters, hardware keys or other parts required to provide this functionality and connect to the controller shall also be provided and handed over upon completion.

- DOAS shall be connected to the existing BAS for monitoring purposes only (general alarm) with an override switch for “Safe Area Mode” operation.

- Provide sequence of operation for DOAS in conjunction with supply and exhaust fans serving Safe Area.

- The provided DOAS sequence of operation shall include a “Safe Area Mode”. “Safe Area Mode” is described as follows:

When the safe area switch is in the “Off” position, the DOAS shall operate normally as scheduled, the DOAS supply air & return Air ducts motorized dampers associated with the Safe Area shall be opened, the Safe Area supply & exhaust fans duct trunk motorized dampers shall be closed, and Safe Area supply & exhaust fans shall be turned off.

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When the safe area switch is in the “On” position, the DOAS shall be turned off, the DOAS supply air & return Air ducts motorized dampers associated with the Safe Area shall be closed, the Safe Area supply & exhaust fans duct trunk motorized dampers shall be opened, and Safe Area supply & exhaust fans shall be turned on.

The contractor shall provide all necessary controls devices, coordinate and revise the “Safe Area Mode” described above to match field conditions and OBO approval. All controls devices associated with the Safe Area shall be hardwired.

2.1.9 Start up, Testing and Balancing, Commissioning.

- The Contractor shall perform DOAS start up in presence of the Owner

- The Contractor shall perform testing and balancing of new all equipment and systems. A summary report of testing and balancing readings shall be provided.

CLIN 2 : Basement Area duct distribution

2.1.10 Basement Area Duct Distribution System Requirements.

- The Contractor shall verify all existing supply and return ducts routing and supply/return grilles to ensure ventilation (outside air) is delivered to each space in the basement.

- The Contractor to replace/install new supply and return/exhaust ducts and supply/return (exhaust) grilles.

- Disconnect and cap supply and return ducts risers from AHU-3 at the basement ceiling slab.

- Remove if not used horizontal supply and return ducts from AHU-3 in the basement Safe Area.

- Connect supply and exhaust ducts from DOAS unit to the supply and exhaust ductwork from supply and exhaust fans serving Safe Area. Reuse the existing secure FEBR penetrations for the Safe Area.

- Branch-out supply and exhaust ducts from DOAS unit and connect to the existing supply and return ductwork (AHU-3) serving the remaining basement area (without the Safe Area)

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- Install four (4) motorized dampers, to shut down DOAS system and activate Safe Area mode in case of emergency.

- The Contractor shall perform testing and balancing of new all equipment and systems. A summary report on testing and balancing readings shall be provided.

- Install ventilation ducts according to the attached sketch.

3.0 GENERAL REQUIREMENTS

3.1 The Contractor shall provide OBO and the Embassy with construction services for installation of complete operating systems. All construction shall comply with 2025 OBO Supplements to the latest International Building Code (IBC), National Electrical Code (NEC), International Mechanical Code (IMC), and International Plumbing Code (IPC), in addition to the approved specifications.

3.2 The Contractor shall maintain continuous usage of existing systems during construction to the maximum extent possible, including providing temporary cooling units, if necessary. Hammer drilling, welding, removal of old equipment and installation of new equipment shall be performed in close consultation with Post officials.

All noisy and disruptive work shall be performed outside Consular interview operations’ hours.

3.3 OBO shall provide all hazardous material reports that have been conducted at

Post, prior to the survey trip for review by the Contractor and coordination with Post personnel as to which, if any, remediation’s have been conducted.

3.4 The Contractor shall provide all requests for information (RFI) via the ProjNet

Government/Contractor Exchange Folder.

3.5 Construction shall consist of six, 8-hour construction days per week at Post unless instructed otherwise.

3.6 Normal Embassy workweek is from Monday to Friday, 8:00 am to 5:00 pm, unless notified otherwise.

3.7 The Contractor is not allowed to carry classified material (drawings, notes, etc) to/from Post.

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4.0 CONSTRUCTION SERVICES

4.1 Procurement and Shipping: Once the CO/CS issues the NTP , the Contractor shall provide equipment submittals to OBO as called for in the specifications.. A.

Deliverables: The Contractor shall submit digitally the following to the COR:

A. Shipping Bill of Materials: The Contractor shall submit bill of materials and shipping schedules.

B. Shipping Invoices: The Contractor shall submit appropriate invoices for materials when shipped.

C. Cost Verification: Any costs pertaining to taxes such as Value Added Tax

(VAT), government regulations, or any other extraordinary items shall be identified.

4.2 Commissioning Services: All systems shall be tested and commissioned per the specifications. The final commissioning of the new equipment shall be performed with an OBO/PDCS/DE/ME representative present. The Contractor shall be responsible for the following construction inspections and tests:

A. New DOAS unit testing and commissioning.

B. Testing and balancing of systems and exhaust fans and their interface with the stand-alone controls.

C. Manufacturer’s Warranty Inspection.

4.3 Deliverables: The Contractor shall provide digitally and two (2) hard copies of the following to the COR:

A. Manufacturer’s Spare Parts List. The Contractor shall provide a list containing manufacturer’s part numbers, addresses, and telephone numbers for future repair and maintenance.

B. Operations and Maintenance (O & M) Manuals in 3-ring binder. Provide two copies to Embassy only.

C. Identification of Warranty Items

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D. Testing and Balancing Report

E. As-built drawings.

F. Manufacturer’s Equipment Warranties and Identification of Warranty

Items.

G. One-year workmanship guarantee in writing covering all equipment, materials and labor in the event any workmanship or equipment items are found defective.

4.4 The Contractor shall provide a minimum of eight (8) hours of operation and maintenance training on the system to Post staff. Coordinate both training period with COR and Post FMS in writing at least three (3) days in advance.

5.0 CONTRACT ADMINISTRATION

5.1 The Contractor shall not conduct any work that is beyond this SOW unless directed in writing by the CO. Any work done by the Contractor beyond this SOW without direction from the CO will be at the Contractor’s own risk and at no cost to the Government.

5.2 The CO shall provide a NTP to the Contractor. No work shall be initiated until the CO issues the NTP.

5.3 The CO may designate more than one individual to serve as the COR. The

Contractor will be furnished evidence of COR appointments, including explicit authority delegated to each COR and their responsibilities.

5.4 Decisions by the COR regarding construction quality will be final.

Construction issues recognized by the COR as requiring actions outside the existing SOW will be separately documented and require a contract modification.

5.5 The Embassy has the right to inspect and test all services called for by the contract, to the extent practicable at all times and places during the term of the contract. The Facility Manager (FM) or the designated representative may oversee all quality control (QC) and quality assurance (QA) inspections and tests during construction to confirm the work is installed according to the

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Construction Documents.

5.6 The CO has the right to terminate this contract.

6.0 RESPONSIBILITIES OF THE CONTRACTOR

6.1 The Contractor shall ensure that the project is executed smoothly, delivered on schedule and within the project budget. The Contractor shall coordinate the efforts of all sub-contractors to ensure successful completion of this project within schedule and cost.

6.2 Any cost associated with services subcontracted by the Contractor shall be borne by and be the complete responsibility of the Contractor under the fixed price of this contract.

6.3 The Contractor shall be and remain liable to the US Government (USG) in accordance with applicable US law for all damages to the Embassy caused by the Contractor's negligent performance of any of the services furnished under this contract. The rights and remedies for the USG provided for under this contract are in addition to any other rights and remedies provided by US law.

6.4 At the USG’s discretion after award, the Contractor shall make available a representative to meet with the COR once every two weeks to discuss the Progress Report, or other matters pertaining to the Project.

6.5 When the USG calls a meeting, the Contractor shall prepare the minutes of each meeting in order to document the project's progress and scheduling data.

These minutes shall be submitted to the USG for review and approval. E-mail or other electronic confirmation of telephone conversations affecting the contract shall also be prepared.

6.6 The Contractor shall prepare and maintain a Work Plan and a Project Schedule to address the work activities and schedule that comprise the project. The Work Plan and Project Schedule are intended to document the entire project from beginning to end.

6.7 Project Management: The Contractor’s senior representative shall be responsible for briefing DOS personnel on the status of the Work. The Contractor shall have all the means to communicate with on-site personnel and OBO using state-of-the-art technologies for the industry including, but

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6.8 The Contractor shall partner closely with the COR and FM.

Start-up, Commissioning, and Warranty Management: The Contractor is responsible for start-up and commissioning of the equipment. The warranty period is one year (12 months) from the date of substantial completion.

7.0 PROJECT Schedule

7.1 The Contractor shall commence work under this contract promptly upon issuance of NTP, execute the work diligently, and achieve final completion and acceptance of the project, including final cleanup of the premises and training of Post operations personnel, within the contract period specified.

7.2 Construction shall not exceed 90 calendar days.

7.3 Milestones (milestones are in “Calendar days”):

Construction Services

Construction Notice To Proceed TBD

Pre-construction conference (Madrid) 10 days prior to mobilization

Construction work ends 90 days after NTP

Commissioning 7 days prior to

Completion

Final cleanup begins 7 days prior to Completion

Operations training 2 days prior to Completion

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CLIN 1: 50 DAYS

CLIN 2: 40 DAYS

8.0 PROJECT SECURITY REQUIREMENTS – N/A

END OF STATEMENT OF WORK