SOW Greenhouse Headhouse Heating and Ventilation Modifications and Repairs.pdf

Statement of Work USDA Agricultural Research Service

United States Department of Agriculture Agricultural Research Service

STATEMENT OF WORK

Greenhouse/Headhouse Heating and Ventilation Modifications and Repairs

Plant Science Facility 3127 Ligon St, Raleigh, North Carolina xxxxxx

Asset ID: 664500B011, 664500B004, 664500B002, 6664500B011

August 12, 2021

Prepared by Tochie Ezento

TABLE OF CONTENT

1. SCOPE STATEMENT

2. CODES AND STANDARDS

3. PROJECT REQUIREMENTS

4. CONTRACTOR RESPONSIBILITIES

5. DOCUMENTATION REQUIREMENTS

6. SAFETY REQUIREMENTS

7. PERIOD OF PERFORMANCE

8. WARRANTY

9. PROJECT CONTACTS

10. Pictures of Fans, Fan Coils, Louvres and New intake Position

1. SCOPE STATEMENT

The USDA-ARS Research facility at 3127 Ligon St, Raleigh, North Carolina seeks a contractor to replace fifteen hydronic unit heaters, install twelve horizontal airflow fans, and install/modify three intake louvers, and replace three doors throughout three greenhouses and one headhouse.

The hydronic unit heaters have deteriorated and require replacement. The heating capacity of the current unit heaters as designed is satisfactory for our purposes. Wiring between the breaker panels and disconnect switches is functional and does not require replacement, but wiring between the unit heaters and disconnect switch, including the disconnect switch itself, needs to be replaced.

Two greenhouses are without horizontal airflow fans and space temperatures are uneven, leading to unwanted cycling of the greenhouse temperature controls. Six greenhouse bays require two 20” horizontal airflow fans each to remedy this. Installation of these fans will require wiring between the fans and the normally closed exhaust fan relay inside the greenhouse controller’s contactor panel.

Two greenhouse bays are without intake louvers but are equipped with exhaust fans. Intake louvers with powered actuator motors need to be installed on the greenhouse walls opposite the exhaust fans. The exhaust fans are operated by a thermostat mounted on the inside wall of the greenhouse; the actuator motors can be wired to the thermostat to open whenever the exhaust fan is powered, but wiring needs to be installed between the actuator motors and the thermostats. Installation of intake louvers in these two greenhouses requires replacement of the adjacent sliding doors with outswinging doors. The current (sliding) door operation will be blocked by the intake louver assembly.

One greenhouse bay requires its intake louver system replaced to function the same as all other intake louvres. Intake louvers are functional, but it is desired that the actuator motors and associated apparatus be of same make and model installed on all other greenhouses.

No Government equipment or services will be available for use by the contractor unless specified in section 7.1.

1.1. Base Bid

The contractor shall provide a detailed proposal and cost breakdown for the entire project as specified in this statement of work.

The base bid shall include descriptive literature and written specifications for all materials and equipment included in the quote.

1.2. Site Visit

Contractors are encouraged to visit the site and be escorted by a government representative to confirm locations, dimensions, and conditions of the project before a bid is submitted. The site visit shall be for the purpose of observing conditions relevant to the completion of this project. No consideration will be given to claims based on lack of knowledge of existing conditions, except where contract documents make definite provisions for adjustment in cost or extension due to existing conditions not readily foreseeable.

Contractor is responsible for inspecting the site and ensuring compatibility of all materials and equipment.

Contractor must be registered in System for Award Management, (SAM), prior to submitting a bid. Registration can be completed at www.sam.gov/portal/public/SAM .

2. CODES AND STANDARDS

Applicable Codes and Standards apply and are not limited to the following:

ANSI - American National Standards Institute.

ASME - American Society of Mechanical Engineers EPA - Environmental Protection Agency NEC - National Electrical Code NFPA - National Fire Protection Association OSHA - Occupational Safety and Health Administration

All work must meet all Local, State and Federal codes, and latest IBC codes where necessary.

3. PROJECT REQUIREMENTS

Scope of Work

The contractor shall:

• Provide all materials necessary to complete work; remove and dispose of all materials replaced.

• Remove 15 unit heaters and replace with new material. This includes the unit heater itself, structural connectors/hanging apparatus, wiring, conduit, disconnect switches, isolation valves, piping modifications, pipe insulation where necessary, and any other materials or methods necessary to facilitate proper installation. A schedule of current unit heaters can be seen on Page 3.

• Provide and install twelve horizontal airflow fans. This includes the fans, wiring, disconnect switches, hanging apparatus, toggle switches, and any other materials or methods necessary to facilitate proper installation. Fans shall be wired to the 2nd stage exhaust fan relay’s normally closed terminal, with a toggle switch allowing for circuit to be turned off. Fans shall operate unless the 2nd stage exhaust fan relay is energized, or toggle switch is in the off position. An example of this wiring scheme can be seen on site in Greenhouse 4.

• Install intake louvres on walls opposite exhaust fans Greenhouse 4, Bay 3, and Greenhouse 1 Bay 3; wire actuator motors to existing fan thermostats. Actuators shall http://www.sam.gov/portal/public/SAM open louvres any time the exhaust fan is energized and close when exhaust fan is de-energized. This includes louvers, motors, actuating apparatus, intake screen, wiring, conduit, modifications to greenhouse exterior panels, and any other materials or methods necessary to facilitate proper operation.

• Remove sliding doors adjacent to new intake louvers and replace with alumium, single light, outswinging 36” doors; make any modifications to door frame to assure proper fit and function.

• Replace the intake louver in Greenhouse 2, Bay 3 to contain the same actuating apparatus as all other greenhouse intake louvers. This includes louvers, motors, actuating apparatus, wiring, conduit, modifications to greenhouse exterior panels, and any other materials or methods necessary to facilitate proper operation. Example of desired louver actuator can be seen on site in any other greenhouse bay.

Specifications

• Replacement unit heaters in shall be of equal or greater (max 10% greater) BTU output and coated with baked on epoxy finish. Greenhouse unit heaters (vertical discharge) shall be equipped with cone type air diffusers. Headhouse unit heaters (horizontal discharge) shall be equipped with adjustable louvers.

• Any piping and pipe insulation installed shall be of material consistent with existing pipe and insulation.

• All piping shall be equipped with automatic air vent valves at each unit heater.

• Louvers for Greenhouses 1 and 4 (Bay 3 of each) shall be 36”x 72” nominal ( 2x J&D

MFG model VRGS36A-PS or equivalent).

• Replacement doors shall be outswinging, single light, aluminum doors consistent with other outswinging greenhouse doors. Doors shall be equipped with a locking mechanism and installed as to not interfere with, or be interefered by, operation of intake louvers or any other greenhouse systems. Frame modifications shall be made with aluminum bar stock, extrusions, plate, or other weather resistant metal.

• All conduit and wiring methods shall be suitable for greenhouse environments.

• HAF fans (Jaderloon UNIFLOW 2000 or equivalent) shall be 20” diameter fans hung from greenhouse rafters, hardwired to disconnect switches. New wiring shall connect to the normally closed 2nd stage exhaust fan (Cooling Stage 3) relay terminal. Fans shall operate whenever Stage 3 or 4 cooling is not engaged.

• All installation/modification practices shall be in accordance with national, state, and local codes and satisfy requirements of USDA ARS Facility Design Standards Manual 242.1

Dimensions of available wall space for new intake dampers. Dimensions follow:

• GH1, available wall space for intake damper: 96”W x 62”H

• GH2, available wall space for intake damper: 144”W x 54”H

• GH4, available wall space for intake damper: 93”W x 52”H

Existing Unit Heaters Location Manufacturer Model Serial Qty

Greenhouse 1, Bay 1 Modine V540 1H13886D 03F084 1 Greenhouse 1, Bay 2 Modine V415 1H13926D 03F084 1 Greenhouse 1, Bay 3 Modine V165 1H13923D 03F084 1 Greenhouse 1, Bay 4 Modine V540 1H13886D 03F084 1 Greenhouse 2, Bay 1 Trane UHPA-146P 4A BAF N/A 1 Greenhouse 2, Bay 2 Trane UHPA-146P 4A BAF N/A 1 Greenhouse 2, Bay 3 Trane UHPA-122P 4C

AA1TO

N/A 1

Greenhouse 2, Bay 4 Trane UHPA-146P 4A BAF N/A 1 Greenhouse 4, Bay 1 Trane UHPA-146P 4A BAF N/A 1 Greenhouse 4, Bay 2 Trane UHPA-146P 4A BAF N/A 1 Greenhouse 4, Bay 3 Trane UHPA-122P 4C

AA1TO

N/A 1

Greenhouse 4, Bay 4 Trane UHPA-146P 4A BAF N/A 1 Headhouse Trane UHSA 060S 8AAAC N/A 3

3.1. Disposal

If hazardous materials are present, (i.e., rusted parts, sharp items, etc.), they shall be properly disposed of according to all applicable local, state, and federal codes and regulations regarding hazardous waste disposal.

Dispose of removed materials, waste, trash, and debris in a safe manner and in frequent intervals, in accordance with applicable laws and ordinances and as prescribed by authorities having jurisdiction. Location of disposal site and length of haul shall be the Contractor's responsibility.

4. CONTRACTOR RESPONSIBILITIES

The contractor shall provide a complete and functional installation, including all labor, supervision, tools, materials, equipment, apparatus, transportation, rigging and other equipment and services necessary to accomplish the work in accordance with the intent and meaning of this statement of work.

Site Access during Covid-19 recovery will require additional steps. At this time, contractors are to have their temperatures taken, and will be asked a series of questions regarding your general health and exposure to others with symptoms of illness (coughing, fever, short of breath, etc.). Contractors must wear masks while in public spaces. Masks are not required when performing project work outside of public spaces. These access requirements are subject to change at any time without warning.

The project work shall be performed per the following guidelines:

1) Contractor will verify all dimensions and site conditions prior to beginning work.

2) The contractor shall always be responsible for protecting his work and ensuring the safety of his crew and ARS employees.

3) Contractor shall remove and dispose of all construction related materials from all work areas daily and remove these waste materials from the site weekly.

4) Contractor is required to manage the project and consult with the government prior to beginning all work phases.

5) Contractor shall perform work in a manner that minimizes the impact to daily operations of the facility and its workers. The building will be occupied during construction work.

6) Contractor will provide daily reports of work performed to the LM and weekly status updates to the EPM.

7) Contractor must have a superintendent on the jobsite when crews are performing the installation work.

8) Contactor will provide their own restroom facility.

The contractor shall protect the work, the site, and all existing property and structures within the limits of the construction activities or that may be affected thereby until acceptance of the work. Any damage to property shall be repaired at the contractor’s expense, to pre-damaged condition to the satisfaction of the LM.

The contractor shall keep the construction site clean and free of debris at all times. Restore areas disturbed as nearly as possible to the original appearance and condition. Upon completion of the project, and prior to final inspection, the contractor shall remove all unused material, trash, and debris resulting from the work to the satisfaction of the LM.

5. DOCUMENTATION REQUIREMENTS

5.1. Submittals

Submittal reviews and responses to RFIs shall be accomplished in a maximum of 7 days for the contractor AND the Government for a total of 14 days.

The following submittals are required for approval:

1. Manufacturer’s documentation for all proposed equipment including outline drawings, data sheets, brochures, owner’s manuals, spare parts, warranty, etc.

5.2. Pre-Construction Submittals

Prior to Construction Notice to Proceed (NTP) the following submittals must be submitted to the Contracting Officer (CO) for approval.

1. Work Schedule including daily start/stop time.

2. List of contract site personnel

3. Site Specific Safety Plan (SSSP)

6. SAFETY REQUIREMENTS

The contractor is responsible for complying with all local, state and federal safety codes and regulations.

The contractor will submit a Site Safety Specific Plan (SSSP) in industry recognizable format to the Contracting Officer within 14 days of contract award. The Government shall review the SSSP prior to the start any construction activities.

Safety and health matters, as they relate to the work, are the exclusive responsibility of the contractor. The contractor shall furnish, erect, and maintain barricades, warning lights, signs, guards, or take other precautions that may be required by law or local authorities for the protection and security of the grounds, facilities and personnel.

7. PERIOD OF PERFORMANCE

The completion of this project shall not exceed 60 days from date of notice to proceed. A request for time extension must be submitted to the Contracting Officer in writing. Each request must include specific and detailed reasons in support of the schedule alteration.

7.1. Work Hours:

Contractor work hours shall be Monday through Friday, 8:00 A.M. to 5:00 P.M. except on Government holidays. Any changes to work schedule shall be submitted to Contacting Officer for written approval three days prior to schedule change.

Power for tools and bathroom facilities are available on site. Some on site storage for materials is available but is limited and varies throughout the year

8. WARRANTY

The contractor shall provide and submit a single written warranty, stating that all portions of the work are in accordance with Contract requirements. Guarantee all work against faulty and improper material and workmanship for a period of one (1) year from date of final acceptance by the USDA, except where manufacturer guaranties or warranties are for longer terms. The contractor shall correct any covered deficiencies which occur during the guarantee period within 24 hours after notification.

9. PROJECT CONTACTS

Engineering Project Manager (EPM):

Tochie Ezento 141 Experiment Station Road Tochie.ezento@usda.gov Stoneville, MS 38776 Phone: 832-866-1194

Research Lead (RL) Dr. David Marshall 3411 Gardner Hall David.Marshall@usda.gov Raleigh, NC 27695 Phone: 919-515-6819

Administrative Officer (AO):

Audra Bowman 840 Method Road Audra.Bowman@usda.gov Raleigh, NC 27695 Phone: 919-515-2731

Location Monitor (LM) Kurt Geisler 840 Method Road Kurt.Geisler@usda.gov Raleigh, NC 27607 Phone: 919-917-623895

Real Property Specialist (RPS) Erica Jones 141 Experiment Station Road Erica.jones@usda.gov Stoneville, MS 38776 Phone: 662-686-5323

Area Safety and Health Manager (ASHM):

David Daniels 950 College Station Road David.daniels@usda.gov Athens, GA 30605 Phone: 706-546-3311

Contracting Officer (CO):

Shalunda Mix shalunda.mix@usda.gov mailto:Tochie.ezento@usda.gov mailto:David.Marshall@usda.gov mailto:Audra.Bowman@usda.gov mailto:Kurt.Geisler@usda.gov mailto:Erica.jones@usda.gov mailto:David.daniels@usda.gov

10. Pictures of Existing Fans, Fan Coils, Louvres and new intake installation Position