Attachment 2 SOW.pdf

Statement of Work (SOW)

Emergency HVAC Repair at Dolores Public Lands Office US Department of Agriculture (USDA)

Forest Service (FS)

Rocky Mountain Region (R02)

San Juan National Forest-Dolores Ranger District

Created By:

Benjamin Glenn

Civil Engineer – USFS – Durango, CO

Benjamin.glenn@usda.gov, 970-385-1273

Contents Project General Information

1.0 Scope of Work

2.0 Background

Contractor Requirements

3.0 General Requirements / Bid Items

4.0 Site Information and Execution

5.0 Schedule

6.0 Submittals

7.0 Security Requirements

8.0 Attachments

9.0 Site Photos

Project Emergency HVAC Repair at Dolores Public Lands Office

General Information

1.0 Scope of Work

The scope of this project is to remove and replace the main HVAC unit at the Dolores Public Lands Center. Install a new computerized remotely accessible control system to operate the HVAC unit and maintenance all baffles and control boxes within the system to ensure airflow is correct in all zones.

2.0 Background

The Dolores Public Lands Office main HVAC unit has failed. It can no longer provide AC cooling to the entire structure.

The unit is outdated, and parts are no longer manufactured to assist with repairs. The entire unit must be replaced with a new HVAC unit and some control system components. Dampers and control boxes must be maintained to ensure the new unit is functioning properly and operates on a new remotely programable computerized HVAC system. The unit and control system has seen upgrades since the drawings were completed. VFD motors have been installed on the current unit, and valve box and fire damper controllers have been upgraded in the past.

Contractor Requirements

3.0 General Requirements / Bid Items

The project requires the contractor to be responsible for supplying all labor, materials, equipment, miscellaneous items, freight, delivery, and all necessary valid licenses and permits required to complete work identified in this contract. This includes possessing a valid electrical license, and plumbing license in the state of Colorado.

The contractor is responsible for complying with and providing documentation with the most current of the following codes during construction:

• International Plumbing Code (IPC)

• International Mechanical Code (IMC)

• National Electrical Code (NEC)

The Contractor must follow all requirements set forth in the attached technical specifications (specs) and must work with CO/COR when questions arise regarding the drawings and specs.

General Requirements

1. The contractor shall field verify all dimensions and product information.

a. The dimensions provided by the government are only approximations and they are not responsible for their precision or accuracy. This includes but is not limited to blueprints, drawings, schedules, and statements of work.

2. All trash, waste, and construction debris generated shall be disposed of offsite.

3. Provide a warranty for all labor and work contained herein.

a. Extended warranties and guarantees for equipment and products shall be passed along.

BASE BID ITEMS

1. Mobilization The Contractor is required to move personnel, equipment, material, and incidentals to the project before beginning work at the project site. All project staging locations on site for materials and equipment must be discussed and agreed upon.

2. HVAC Unit Removal The contractor is required to remove the old Carrier HVAC unit and associate components and dispose of offsite.

Disposal must follow all local, state, and federal requirements for the disposal of refrigerants and HVAC units and proof must be submitted to COR

3. HVAC Unit The contractor is required to purchase a new package outdoor HVAC unit. “Carrier Weathermaker” brand, or approved equivalent. The HVAC unit is capable of meeting the following requirements at a minimum. Existing unit model # 48AWT035NFQ611EE should be matched or upgraded with a modern version.

Unit overall capabilities:

Unit item Unit Requirement Brand Carrier (or approved equivalent) Type Weathermaker (or approved equivalent) Arrangement Horizontal discharge Supply cfm 14,495 Minimum outside cfm 1,600 Fuel Natural Gas Electrical voltage 480- 3 phase Cooling Capacities Tonnage 35 BTUH- Sensible 310,000 BTUH-Total 400,000 Condenser Entering Air- DBF 115 Condenser Entering Air- WBF 62 Heating Capacities MBH input 610 MBH Output at 7500ft 350 Efficiency % 82

Variable Frequency Drive motors on all fans and multistage cooling capacity are required on the unit.

4. HVAC Unit Installation The contractor is required to provide all equipment for and to install the new HVAC unit. The unit shall work with existing infrastructure, including but not limited to concrete pedestal, gas supply, electrical supply, and ducting. Modifications may be necessary and should meet all current mechanical and electrical codes. Ducts shall be weatherproof and insulated if they are exterior of the building. The contractor shall clean the exterior and interior installation areas from all debris resulting from the unit installation.

5. HVAC Control System Modifications

The contractor is required to install a new Building automation system (BAS) to operate the HVAC unit. New communication sensors at all current zone thermostats shall be installed. New communication sensors with user override and setpoint adjustment abilities shall be selected. Work with COR and onsite tech to pick user capabilities at each zone thermostat. Carrier ZS2 Pro or approved equivalent should be utilized as communicating sensors. HVAC BAS should be computer controlled and remotely accessible. Remote log-in and onsite computer must be accessible to government computers, work with COR to train ensure these capabilities.

Building shall have carrier automation graphics created to assist with diagnostics and solutions. Carrier i-Vu or approved equivalent should be utilized to control the system. The contractor is required to maintenance all damper and valve box controls to work with the new control system and HVAC unit. Replace controllers on valve boxes to adjust when the new HVAC unit or control system calls for change in airflow conditions. Valves are currently Carrier VVT Zone controller PN #33ZCVVTZC-01. The contractor shall install Carrier “TV-VVTZC VVT” or similar zone controllers. Installation of other required BAS system components shall also be included and required by the contractor. Final inspection of the system shall include a Test and Balance technician to ensure all areas of the building are getting effective flow and air temperatures. A physical testing and balancing report shall also be generated.

4.0 Site Information and Execution

Site Location:

From Durango, Colorado head west on Highway 160 for 27.5 miles. Turn right onto CO-184 in Mancos Colorado.

Follow Co-184 for 17.2 miles. Turn right into the Dolores Public Lands Office. The building is located 29211 CO- 184, Dolores, CO 81323, 37.46185, -108.51800, Site Conditions:

• The elevation of the site is approximately 6,500 feet above mean sea level. The construction site can experience heavy snowfall and cold temperatures in the winter.

Utilities:

• Use of Government existing facilities will be permitted without metering and without payment of use charges, as long as facilities are cleaned and maintained in an acceptable condition. At Substantial Completion, restore these facilities to condition existing before initial use. The following are available for use by the contractor: water, electrical power services, and bathrooms. The following are not available: telephone service. The contractor is expected to provide whatever phone service is deemed necessary for the duration of the project.

Staging and Storage:

• Coordinate on-site staging and storage requirements with the Center Point of Contact or the Contracting Officer

Representative (COR).

• When government owned furniture, cabinets, or appliances must be moved they must remain indoors.

o Damaged to any government owed property that is not detailed in this contract will be replaced at the expense of the contractor.

• It is the contractors responsibility to have all items safely stored and locked when staff are not on site.

Construction waste and disposal facilities:

• Provide waste-collection in sizes adequate to handle waste from construction operations. Containerize and clearly label hazardous, dangerous, or unsanitary waste materials separately from other waste.

Building protection:

• Dust containment systems must be in place to eliminate excess air pollution within the buildings.

• Access to fire protection devices must be always clear and operational during the duration of the project.

o If fire detection system is not online or projection devices cannot be reached temporary systems must be set up (i.e., extra fire extinguishers, temporary smoke/CO alarms)

• Provide final cleaning. Conduct cleaning and waste-removal operations to comply with local laws and ordinances and Federal and local environmental and antipollution regulations.

o Cleaning Agents: Use cleaning materials and agents recommended by manufacturer or fabricator of the surface to be cleaned. Do not use cleaning agents that are potentially hazardous to health or property or that might damage finished surfaces.

o Facilities should be cleaned to the state that they were found in before final payment will be made.

5.0 Schedule

Working Schedule:

• Office hours are between 8:00 AM-4:30 PM Monday through Friday.

• Contractor hours can occur anytime with COR approval and correct logging of onsite staff.

6.0 Submittals

Submittals will be reviewed and approved by the COR. Submittals include the following:

Submittal Submission Date Notes

Project Schedule Within 5 business days of contract award notification. Must be Gantt Chart format.

Subcontractor Identification 10 days prior to construction

Contractors/subcontractors certification for HVAC installation 10 days prior to construction

Include all certifications the contractor holds to install HVAC units so warranties and service are possible.

Manufacturer’s Information 10 days prior to construction Include for all hardware (including but not limited to the HVAC Unit, Control system, Baffles).

Warranty Information 10 days after construction is complete

Submit all warranty paperwork with applicable companies and provide logs to

COR

Testing and Balancing Report Upon final inspection of system Testing and Balancing report shall map pressures, flows, and temperatures of each zone within the structure.

7.0 Security Requirements

This building is a US-FS facility that follows HSPD-12 Security Requirements.

• Staff must sign in at the front desk when entering the facility for the day. Guest passes will be presented to enter the facility doors ONLY when guests have signed them out.

• Guest Passes MUST be returned each day.

8.0 Attachments

See attachments for more project details

• SOI-EmergDPLC_HVAC_Replacement

• Drawings-AsBuilt_DoloresRS_Mech_Elec

9.0 Site Photos

These are site photos of existing equipment taken on 7/25/2025

Figure 1: Existing Carrier unit to be replaced

Figure 2: Existing Carrier unit to be replaced side profile showing building connections

Figure 3: Existing Carrier unit to be replaced side profile showing gas and building connections

Figure 4: Existing HVAC on unit identification

Figure 5: HVAC control system overview within building

Figure 6: HVAC control board model and specs

Figure 7: Current Valve box controllers

Figure 8: Current Fire damper controller