Statement of Work for Replacement of Evaporative Coolers.docx

Statement of Work Byron, GA Greenhouse Evaporative Cooling System Replacement

CPAIS ID: 660605B002, 660605B003, 660605B004, 660605B005

Overview The Southeastern Fruit and Tree Nut Research facility in Byron, Georgia has four greenhouses. These greenhouses have concrete slabs with concrete masonry unit (CMU) stem walls supporting the greenhouse peaked roof structure. The Greenhouses have been recently renovated with 8 mm twin wall polycarbonate glazing, roof and side wall vents with rack and pinion that run the length of the greenhouses and two exhaust fans per bay. The vents, exhaust fans, heaters and evaporative cooling system are all set up on an automated thermostatically controlled ventilation system.

This Statement of Work (SOW) is for the replacement of the deteriorating evaporative cooling system that was not part of the recent renovation for hurricane damage. This replacement will improve conditions that will provide fully functional greenhouses to support research.

The greenhouses are approximately 26’ wide by 84’ long, totaling 2,200 ft each with three (3) bays (not equal size), supported on 3’ high concrete block stem walls, with concrete slab floors. Each greenhouse is glazed above the stem wall to about 8’ with a roof peak approximately 16’ above grade with an 8 mm twin wall (Lexan) polycarbonate glazing system with aluminum glazing bar system. The greenhouses have double loaded roof and single side wall vents.

The current evaporative cooling system is stainless-steel for a 4” x 36” pad with sump pump and are installed in all 12 bays. The below drawing shows bays 1 & 4 and they are approximately 29’6”’ in length, bays 2 & 5 are approximately 19’4”, bays 3 & 6 are approximately 29’6”, bays 7 & 10 are approximately 19’4”, and bays 8, 9, 11 & 12 are approximately 29’6-8”.

With these measurements being approximate, interested contractors shall take field measurements and perform site inspections to validate entire size and scope of project.

Photo of Sump Pump System to be removed Scope of Work The following is an outline of tasks to be performed by the contractor. This in not all inclusive and other work may be required to complete the project in accordance with applicable building codes and professional workmanship standards. The work shall be performed in a prompt timely fashion once construction begins.

Evaporative Cooler Typical Requirements The four greenhouses are currently equipped with a sump pump evaporative cooling system that will need to be replaced by a self-contained evaporative cooling system that is a more efficient design with the intent to be fully integrated with the existing thermostatic control system. Here are some of the required features and activities that will need to be completed:

Required features

• Stainless Steel Cooling System for 4” x 36” pads

• Self-contained water trough

• Standard bleed line to prevent buildup of salts and minerals

• Float Valve water hose attachment that will automatically refill trough as evaporation occurs Link to acceptable requirement specification - All submittals must be equal to or exceed these specs.

https://www.greenhousemegastore.com/equip/cooling/evaporative-cooling/stainless-steel-evap-system-for-4-pads-ev--ss4?returnurl=%2fequip%2fcooling%2fevaporative-cooling%2f

Various Activities not all inclusive

• The contractor shall provide all labor, materials, equipment, supplies, transportation, utilities, supervision, bonds insurance, permits and incidentals for all work

• Contractor shall coordinate all work activities with the CO prior to beginning any work. All work shall be scheduled in a manner such that on-going research is not impacted negatively. Normal working hours are from 7am until 5:00pm Monday thru Friday, excluding federal holidays. Work outside of normal hours must be approved by the CO. All submittals shall be submitted, received, and returned to the contractor prior to commencement of work.

• Contractor shall remove and dispose of all existing evaporative cooling system components - framing, pads, plumbing, sump pump and water reservoir. (serviceable Sump Pumps may be retained)

• Contractor shall replace all evaporative cooling system components - framing, pads, plumbing.

• Contractor may be required to make minor modification to electrical outlet location

• Make all evaporative coolers operational with new thermostatically controlled ventilation system.

Project Schedule:

The ultimate completion expectation for this project should not exceed 15 days from date of notice to proceed. Due to product availability for this project, all submittals shall reference estimated time of delivery. A request for time extension must be submitted to the Purchasing Agent in writing. Each request must include specific and detailed reasons in support of the schedule alteration.

Work Hours:

Contractor work hours shall be Monday through Friday, seven (7) A.M. to four (4) P.M. except for Government holidays or as otherwise arranged with the site personnel in advance.

PROJECT CONTACT:

image1.png image2.emf image3.emf image4.jpeg