SOW - Durango ATB HVAC Repairs.docx

Durango Air Tanker Base HVAC Repairs Statement of Work (SOW)

US Department of Agriculture (USDA) Forest Service (FS) Rocky Mountain Region (R02) San Juan National Forest

Contents

Project Durango Air Tanker Base HVAC Repairs

General Information

1.0 Scope of Work

This project base bid item includes replacing two high efficiency furnace units, one 4-ton condensing unit, electronic filter systems, and to propose and implement system repairs so that each room or a designated area can have a designated set temperature. The system will be modified to fit the needs of the current building users and optimized to be efficient in doing so.

This project optional bid item includes replacing two-unit heaters in the warehouse and replacing the warehouse office AC/Heating unit in kind or approved equivalent. All old warehouse units shall be left in working condition and on site for the government.

2.0 Background

The Durango Air Tanker Base has had issues arise with parts of a complicated HVAC system. The two gas powered furnaces have mostly failed as well as issues have begun with one of the older condensing units. This has resulted in temperature control devices being removed or rewired, dampers not working correctly, large zonal heating and cooling differences and general maintenance intervals being missed. The operations room located on the south-east corner of the building (05 in drawings) sees excessive heat due to large windows while the Heli-tack office (16 in drawings) sees fridged cold temperature due to minimal solar exposure.

Offices have minimal control of temperature and fluctuate wildly with the outside temperature. These problems need to be resolved to improve working conditions and temperature fluctuations on equipment. The warehouse has minimal issues with heating and cooling, but the units have begun to show signs of age and could be replaced.

Contractor Requirements

3.0 Technical Requirements / Tasks

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 to comply and provide documentation with the most current of the following codes during construction:

· International Building Code (IBC)

· International Fire Code (IFC)

· International Plumbing Code (IPC)

· International Mechanical Code (IMC)

· International Existing Building Code (IEBC)

· 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 one-year warranty for all labor and work contained herein.

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

BASE BID ITEMS – OFFICE HVAC Repairs 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.

Office HVAC System Repairs

1. Remove and replace both condensing natural gas fired furnace units.

a. Units must be at a minimum equivalent to the same BTU/HR input and output and be able to provide enough heating for its designated Zones.

b. Dispose of old units offsite

2. Remove and replace older condensing unit.

a. Unit must match other existing 4 Ton Payne Model PA15NC04800GAAAA or approve equivalent.

b. Dispose of old unit offsite

3. Repair or replace any other failed system components.

4. Propose and implement system repairs so that each room or a designated area can have a designated set temperature.

a. Utilize existing duct work and motorized dampers to make changes to flow patterns or ventilation.

i. Changes can be made to ductwork if deemed necessary.

ii. Replacement of some dampers will be necessary.

b. This system must provide heating and cooling adequate to keep a consistent temperature range in each room or designated area.

i. Work with COR and Building Point of Contract to define heating and cooling zones.

c. Remove “comfort ventilator” panels to simplify system controls for building occupants.

d. Work with COR on modifications to the system to achieve the end goal of a functioning efficient low maintenance easy to operate HVAC system.

e. Test and balance the new system. Provide a TAB (Testing, Adjusting and Balancing) report to the COR.

f. Provide training and system maintenance /instruction booklet on the new equipment to maintenance personnel.

i. See Submittals for more information on System Maintenance and Instructions

OPTIONAL BID ITEM – WAREHOUSE Unit heater and AC/heating replacement UNIT Heater Replacement

1. Replace both Warehouse Reznor Unit Heaters with in-kind unit.

a. Units at a minimum must match BTH/HR output and input.

2. Replace one wall mounted AC/Heating unit in Office Space with in-kind unit.

a. Units at a minimum must match Tonnage and BTU/HR output and input.

3. Leave all three old units on site in current working condition for government.

4.0 Submittals/Deliverables

Prepare and submit Action Submittals required in the SOW in this contract, if applicable, and as indicated at the end of this subsection.

1. Collect information into a single submittal for each element of construction and type of product or equipment.

2. Mark up each submittal to show which products and options are applicable.

3. Include the following information, as applicable:

b. Manufacturer's written recommendations.

c. Manufacturer's product specifications.

d. Manufacturer's installation instructions.

e. Manufacturer's catalog cuts.

f. Wiring diagrams showing factory-installed wiring.

g. Compliance with recognized trade association standards.

h. Compliance with recognized testing agency standards

Submittals/Deliverables

· System specifications (including model numbers, filter types, flow rates, etc.)

· Intervals for maintenance items across the system (i.e. filter changes, vent cleaning, recharges, etc.)

· Instructions for changing heat in each zone.

· Instructions for turn the system on and off.

No later than five (5) business days after final walkthrough is complete.

5.0 Site information and Execution

Site Location:

From Durango, Colorado head south on Highway 160 for 8 miles. Turn right onto CO-172 S and continue for 5.7 miles. Turn right on Airport Road and continue for .8 miles. Turn right onto County Road 309A and continue for .2 miles until you turn right into the Durango Air Tanker Base. The building is located at 100 Co Rd 309A, Ignacio, CO 81303, 37.163184°, -107.747169°. CO23 T34N R8W SN29 SWNW.

Magnitude: Between $20,000 to $35,000

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 appliance must be moved they must remain indoors.

· 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 contractor’s 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.

· 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.

· 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.

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

· Complete the following cleaning operations before requesting inspection for certification of Substantial Completion for Project:

· Clean project site, yard, and grounds, in areas disturbed by construction activities, including landscape development areas, of rubbish, waste material, litter, and other foreign substances.

· Remove tools, construction equipment, machinery, and surplus material from the project site.

· Touch up and otherwise repair and restore marred, exposed finishes and surfaces. Replace finishes and surfaces that cannot be satisfactorily repaired or restored or that already show evidence of repair or restoration.

6.0 Scheduling

Pre-Bid Meeting:

The Government is planning a pre-bid conference, during which potential offerors may obtain a better understanding of the work required. Offerors are encouraged to submit all questions in writing at least five (5) days prior to the conference. Questions will be considered at any time prior to or during the conference; however, offerors will be asked to confirm verbal questions in writing. After the conference, an amendment to the solicitation containing an abstract of the questions and answers, and a list of attendees, will be disseminated.

To facilitate conference preparations, it is requested that the person named on the Standard Form 33 of this solicitation be contacted and advised of the number of persons who will attend. The Government assumes no responsibility for any expense incurred by an offeror prior to contract award.

Offerors are cautioned that, notwithstanding any remarks or clarifications given at the conference, all terms and conditions of the solicitation remain unchanged unless they are changed by amendment to the solicitation. If the answers to conference questions, or any solicitation amendment, create ambiguities, it is the responsibility of the offeror to seek clarification prior to submitting an offer.

Location of Conference Date: TO BE DETERMINED Time: 1000 – 1200. MST Location: 100 Co Rd 309A, Ignacio, CO, 81303 Working Schedule:

· Work hours for this project are between 8:00 AM-4:30 PM Monday through Sunday.

· Working outside these hours can occur only if approved by the COR beforehand and is determined to be project critical.

7.0 Security Requirements

Durango Air Tanker Base is a secure government facility located next to a FAA controlled runway and will require coordination with local personnel to gain access to the building and site.

9.0 Site Photos

Figure 1: Internal furnace model sheet.

Figure 2: Indoor Section of air conditioner model sheet.

Figure 3: Indoor section of York cooling air conditioner model sheet.

Figure 4: Electronic filter system.

Figure 5: HVAC system control connections.

Figure 6: Comfort ventilator control panel.

Figure 7: 4 Ton Payne Model PA15NC04800GAAAA outdoor unit model sheet.

Figure 8: Right furnace ducting.

Figure 9: Right side heat recovery ventilator.

Figure 10: Left furnace ducting.

Figure 11: Left side heat recovery ventilator.

Figure 12: Mechanical room overview.

Figure 13: Attic above mechanical room left side.

Figure 14: Attic looking at above mechanical room left side.

Figure 15: Attic above mechanical room right side.

Figure 16: Attic above room 7

Figure 17: Damper on one of room vents

Figure 18: Warehouse south Reznor unit heater

Figure 19: Warehouse north Reznor unit heater

Figure 20: Warehouse office AC/Heating unit inside

Figure 21: Warehouse office AC/Heating unit outside image1.png image2.jpeg image3.jpeg image4.jpeg image5.jpeg image6.jpeg image7.jpeg image8.jpeg image9.jpeg image10.jpeg image11.jpeg image12.jpeg image13.jpeg image14.jpeg image15.jpeg image16.jpeg image17.jpeg image18.jpeg image19.jpeg image20.jpeg image21.jpeg image22.jpeg image23.jpeg