A04_R0040_Statement_of_Work_1.pdf

Farmington District Office – HVAC System Improvements Page 1

Construction Statement of Work

Statement of Work

Construction Services

HVAC System Improvements

Farmington District Office

Bureau of Land Management

Solicitation No. 140L0622R0040

July 6, 2022

I. Introduction

A. The Bureau of Land Management (BLM) is soliciting construction services for the demolition of existing heating, ventilating, and air conditioning (HVAC) systems and the installation of new

HVAC systems for the Farmington District Office building in Farmington, New Mexico. The

District Office building supports BLM operations in the Farmington District, which covers all of northern New Mexico.

II. Project Description

A. Background: The Farmington District Office building was constructed in 2013 and consists of

30,000 square feet of floor area. It is a flat roof, steel-framed building with masonry and metal cladding, composed of a two-story open office area to the west and a single-story private office and public area to the east. The public portion of the building contains the entry lobby, reception area, and public restrooms, along with a Public Room and a Multi-Purpose Room.

B. Existing HVAC Systems: The existing HVAC systems consist of two-stage rooftop mounted evaporative coolers with an underfloor air distribution system – most of the building has a raised floor system with an 18-inch deep plenum for air distribution. Two natural gas-fired modulating-condensing boilers have been installed to provide heat for the building, along with two hot water circulating pumps, air separator, and expansion tank. Fan-powered variable air volume (VAV) terminals with hot water reheat coils have been installed under the raised floor at the perimeter of the building, along with VAV and manual floor diffusers.

C. Project Purpose: The heating, ventilating, and air conditioning (HVAC) systems installed at the

Farmington District Office have been problematic since construction on the building was completed. An abbreviated list of ongoing issues that have been experienced is as follows:

1. Even with remedial work completed at the end of the construction period, the underfloor air distribution plenum leaks supply air excessively, leading to comfort complaints due to lack of good air distribution.

2. The Multi-Purpose Room has been especially difficult to heat and cool properly. More generally, the entire east end of the building has been difficult to heat and cool properly.

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3. The fan-powered VAV terminals and associated air filters located in the underfloor plenum are difficult to access for service and maintenance.

4. Dirt collecting in the floor diffusers is an ongoing maintenance issue. The dirt from people’s shoes causes both the manual damper and automatic damper mechanisms to jam - space temperature control suffers as a result.

5. Even with repeated investments and service contracts, the automatic control system (DDC

BAS or direct digital control building automation system) still does not operate correctly and requires manual operation and adjustment to achieve acceptable comfort conditions.

6. The two-stage evaporative cooling rooftop units require frequent maintenance and use an excessive amount of potable water for their operation.

7. The heating system failed during the winter of 2017/2018. District Office personnel had to be sent home due to the lack of heat, and the fix took time and was expensive. Repair parts for the boilers have been difficult or impossible to obtain in recent years.

8. The HVAC systems that are installed in the Farmington District Office are overly complex and are not standard, which has historically led to a lack of understanding on how they should be operated and maintained.

All of this affects employee and visitor comfort, along with decreased BLM maintenance staff productivity and effectiveness. Current energy use at this facility is also higher than it should be, especially considering that the facility has a 65 kW photovoltaic (PV) solar energy system installed. Replacement of the existing HVAC systems with new high efficiency variable refrigerant flow (VRF) systems will improve occupant comfort, increase system reliability, and increase energy efficiency.

III. Project Location

A. The Farmington District Office is located at 6251 College Boulevard, Farmington, NM 87402

(LAT 36.78613, LONG -108.15830). A pre-bid site inspection by potential bidders to verify existing conditions at the project site is highly recommended, but not mandatory.

IV. Work Covered by Contract Documents

A. HVAC System Demolition: Phased removal of the existing mechanical systems and equipment in the building to accommodate the new mechanical systems. Temporary partitions (polyethylene sheeting) between portions of the building will be required for separation between the work phases, along with temporary protection for the floors and furnishings.

B. Electrical System Demolition: Phased removal of the existing electrical systems and equipment in the building as necessary to accommodate the new mechanical systems.

C. HVAC System Improvements: Installation of new HVAC systems consisting of VRF systems for heating and cooling the building, ERVs for ventilating the building, new HVAC control system, and all ductwork, piping, and appurtenances necessary for a complete and operable HVAC system. This work also includes cutting, patching, spotting, taping, sanding, painting, access doors, minor structural modifications, etc. Cutting and patching will be required for demolition and for routing new ductwork, piping, and conduit in existing walls and ceilings. Access doors will be required for access to piping, conduit, fan coil units, etc. as necessary for installation and maintenance purposes.

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D. Electrical System Improvements: Modification and expansion of the existing electrical systems as necessary to power all new HVAC systems, equipment, and controls.

E. Project Contract Type: All work shall be performed under a single prime contract.

V. Work Phases

A. The work of this contract shall be broken into three phases to limit the impact of construction activities on BLM operations during the construction contact period. The project phases shall be conducted in the following order, with each phase substantially complete before beginning the next phase:

1. Phase 1: The BLM shall vacate employees out of the west end of the building (west of Grid

Line 8). RTU-1 and associated ductwork and HVAC equipment shall be removed, but the existing perimeter heating system components shall remain in operation until the end of

Phase 1. The existing HVAC systems shall be replaced with heat recovery VRF multi-split heat pump systems, with an energy recovery ventilator (ERV) installed to provide fresh air and exhaust service for the west end of the building. The VRF outdoor units and ERV shall be located above the roof, mounted on a new insulated curb cap that shall take the place of

RTU-1.

2. Phase 2: After the completion of Phase 1 (and with the new Phase 1 HVAC systems operational), the BLM shall move employees back into the west end of the building and vacate employees out of the central portion of the building (Grid Line 8 to Grid Line 4).

RTU-2 and associated ductwork and HVAC equipment shall be removed, but the existing perimeter heating system components shall remain in operation until the end of Phase 2. The existing HVAC systems shall be replaced with heat recovery VRF multi-split heat pump systems, with an energy recovery ventilator (ERV) installed to provide fresh air and exhaust service for the central portion and the east end of the building. The VRF outdoor units and

ERV shall be located above the roof, mounted on a new insulated curb cap that shall take the place of RTU-2.

3. Phase 3: After the completion of Phase 2 (and with the new Phase 2 HVAC systems operational), the BLM shall move employees back into the central portion of the building and vacate employees out of the east end of the building (east of Grid Line 4). RTU-3, associated ductwork, and the remainder of the HVAC equipment (including the boilers, hot water circulating pumps, and associated equipment) shall be removed. The existing HVAC systems shall be replaced with heat recovery VRF heat pump systems. The VRF outdoor units shall be located above the roof, mounted on a new insulated curb cap that shall take the place of

RTU-3. The existing gas-fired domestic water heater shall be removed and replaced with hybrid heat pump domestic water heaters – the natural gas pipe feeding the District Office building shall be capped inside the boiler room.

B. As work in the current phase progresses and the Contractor’s work crews are preparing to move on the next phase of work, the Contractor shall give notice 10 calendar days prior to the BLM moving employees out of the next phase work area to allow employees sufficient time to move and to allow the work of the next phase to commence in a timely manner.

C. The contractor shall also give notice 10 calendar days prior to the work of the current phase being substantially complete so that the Government can inspect the work before the employees are moved back into the completed phase work area.

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D. Any punch list items resulting from the Government inspection shall be completed before the employees move back into the completed phase work area.

VI. Contractor Use of Site

A. Use of Site: Limit use of premises to work in areas indicated in the contract documents. Do not disturb portions of the project site beyond areas in which work is indicated. Confine construction operations to areas defined on the drawings - limit site disturbance, including any earthwork and clearing of vegetation.

B. Driveways and Entrances: Keep driveways, loading areas, and entrances serving the premises clear and available to the Government, Government employees, public, and emergency vehicles at all times. Do not use these areas for parking or storage of materials. Parking for Contractor’s and Subcontractor’s employees will be limited to the Warehouse parking lot unless other areas are approved by the Contracting Officer.

1. Schedule deliveries to minimize use of driveways and entrances.

2. Schedule deliveries to minimize space and time requirements for storage of materials and equipment on-site.

C. Storage of Materials: Confine storage of materials to the interior of the building work areas and to areas on the site as shown or approved by the Contracting Officer.

D. Preservation of Existing Facilities: Confine all operations to work limits of the project. Prevent damage to building surfaces. Carefully supervise construction activities to prevent damage.

Restore damaged areas, repairing or replacing damaged areas at no additional expense to the

Government.

E. Construction Camp: Establishment of a construction camp within the boundaries of the site will not be permitted.

F. Firearms: No firearms are allowed on the site.

G. Advertising: No commercial advertising or signage shall be permitted, other than that on

Contractor vehicles or equipment.

H. Waste Disposal: All waste shall be disposed of in a legal and appropriate manner, and in accordance with Federal, State and local regulations.

I. Scheduling: Schedule and sequence operations necessary to complete the work, including coordination with other trades relative to the Contractor's requirements. Schedule work in such a manner as to avoid delays in overall construction schedule and permit proper installation of work.

J. Nonsmoking Building: Smoking is not permitted within the building or within 25 feet of entrances, operable windows, or outdoor air intakes. No smoking signs shall be posted and visible during working hours.

VII. Public Use of Site

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A. The site will be open to the public during normal operating hours. Contractor activities shall take into consideration office employees and visitors in order to limit interactions and disturbance.

Provide orange safety tape to separate the public and Government employees from construction activities.

1. The Contractor shall at all times conduct contractor operations to keep the site clean and free of debris. Areas around the building may be closed to employees, public, or both, when required, upon specific approval of the Contracting Officer.

2. Material placed exterior to the building shall be utilized on a daily basis and cleaned up each evening and placed either inside the building or at a designated storage area. The Government shall not be responsible for the physical security of Contractor’s materials.

VIII. Government Use of Site

A. The Government will occupy portions of the building that will be under construction during the entire contract period. Cooperate with the Government during construction operations to minimize conflicts and facilitate Government usage. Perform work so as not to interfere with

Government's day-to-day operations. Maintain existing building and site exits, unless otherwise indicated.

1. Maintain access to existing walkways, corridors, and other adjacent occupied or used facilities. Do not close or obstruct walkways, corridors, or other occupied or used facilities without written permission from the Contracting Officer.

2. Maintain existing building in a weather tight condition throughout construction period.

Repair any damage caused by construction operations. Protect building and its occupants during construction period.

3. Consideration shall be given to minimize disturbance of everyday activities when scheduling construction activities which may be noisy or otherwise disruptive.

4. The Contractor shall provide a minimum of 48 hour notice for concrete sawing, concrete coring, or other major demolition activities.

5. BLM employees with proper authorization and equipped with personal protective equipment

(hardhat) shall have access to the central file room (Room 110), LEO evidence storage

(Room 183), and the FIMO file room (Room 202B) as necessary during the execution of the work.

6. Government personnel will be continuously occupying the public portion of the building and other areas of the building where the current phase of work is not currently being performed.

Conduct work in a manner that will minimize needs for disruption of normal Government operations. Provide a minimum of 72 hours advance notice to the Contracting Officer of all activities that will impact normal Government operations. Contracting Officer's written approval is required prior to initiation of these activities.

7. If any of the work in the public portion of the building cannot be performed safely or without interfering with the day-to-day business of the BLM, the Contractor will need to schedule those sections of work after hours or over weekends.

IX. Work Restrictions

A. Work Hour Restrictions:

1. Farmington District Office normal business operating hours are from 7:45 AM - 4:30 PM

Monday through Friday, except Federal holidays. Contractor’s work hours may be extended to 7:00 AM – 6:00 PM Monday through Friday, except Federal holidays.

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2. Contractor work hours during other times shall be subject to approval, but it is anticipated that several contractor activities will need to be scheduled at times other than normal working hours in order to avoid disruption to the normal business activities. Provide list of activities that Contractor proposes to be accomplished after normal operating hours.

B. Existing Utility Interruptions: Do not interrupt utilities serving the Farmington District Office facilities unless permitted under the following conditions and then only after arranging to provide temporary utility services according to requirements indicated:

1. Notify the Contracting Officer in writing not less than 2 days in advance of proposed utility interruptions.

2. Do not proceed with utility interruptions without Contracting Officer’s written permission.

3. If extended outages (over 4 hours in duration) are required, they shall occur over a weekend.

Extended outages shall be subject to minimum 14 day prior notice and approval prior to outage.

X. Security

A. Security Clearance:

1. Contractor shall submit a Security Plan at the Pre-Work Conference outlining the procedures proposed to maintain a secure project. After project award, the Contractor shall identify two key personnel who will receive a security clearance (HSPD-12) credential from the BLM and these personnel will be responsible for implementing the security plan. One of these employees shall be on the premises at all times that Contractor’s work/activities take place.

2. Contractor and Subcontractor employees shall be required to display a badge with a picture

ID with their name and company any time they are on site. Visitors shall be required to check in at the Contractor’s trailer and obtain a visitor’s badge to be worn when the individual is on site. Visitors must be accompanied by a credentialed Contractor employee.

B. Keys and Passes:

1. The building requires a key card for entry and most of the interior rooms require a standard key for access.

2. The Contractor’s HSPD-12 credentialed employees may be issued key card passes as well as standard keys, subject to verification, security checks, and training.

C. Openings:

1. During the course of the work, access to the occupied portions of the building must remain secured. Means and methods of securing access points shall be subject to approval by the

Contracting Officer.

D. Personnel:

1. Contractor shall maintain security for all construction personnel and issue credentialed

(picture) identification for all construction personnel on the job site.

2. All visitors or short term subcontractors may be issued a visitor’s pass and shall be accompanied by a credentialed Contractor employee.

XI. Field Verification

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A. Field verify all existing dimensions and conditions affecting the work of this contract before ordering products.

XII. Contractor-Furnished Items

A. All materials shall be new and Contractor-furnished from outside the site.

XIII. Government-Furnished Items

A. The Government will furnish lights, power, and water from existing services in the building for the Contractor’s use. The BLM will not permit wasteful or unauthorized use of Government furnished utilities.

XIV. Period of Performance

A. After the Notice to Proceed is issued, the period of performance shall be 330 days:

1. Phase 1 – 120 days.

2. Phase 2 – 90 days.

3. Phase 3 – 120 days.

XV. Points of Contact

A. Contracting Specialist:

Vicki Meier

BLM National Operations Center, Contracts Branch

Denver Federal Center, Building 50

P.O. Box 25047

Denver, CO 80225-0047

435-236-4091 vmeier@blm.gov

B. Contracting Officer:

Nicholas Brazzale

BLM National Operations Center, Contracts Branch

Denver Federal Center, Building 50

P.O. Box 25047

Denver, CO 80225-0047

435-899-8118 nbrazzale@blm.gov

C. Contracting Officer’s Representative:

Troy Salyers

BLM Farmington Field Office

6251 College Boulevard

Farmington, NM 87402

(505) 564-7743 tsalyers@blm.gov mailto:vmeier@blm.gov mailto:nbrazzale@blm.gov mailto:tsalyers@blm.gov