Air Handling Unit Replacement and Repairs - National Sedimentation Laboratory

United States Department of Agriculture Agricultural Research Service STATEMENT OF WORK Replace 3 Roof Mounted Air Handling Units, Repair one Air Handling Unit and Repair one Chiller B-1 Asset ID 640800B001 National Sedimentation Laboratory Oxford, MS Prepared by: Darren Middleton. March 2026 -- 1 of 10 -- 2 STATEMENT OF WORK Construction PROJECT: Project Title: “Replace 3 Roof Mounted Air Handling Units, Repair one Air Handling Unit and Repair one Chiller B-1” at the USDA, ARS, National Sedimentation Laboratory at Oxford Mississippi -- 2 of 10 -- 3 2.0 PROJECT CONTACT PERSONS: CONTRACT SPECIALIST (CS): Angela Wingert Email: angela.wingert@usda.gov USDA,ARS,AFM,APD 5601 Sunnyside Avenue Beltsville, MD 20705 Phone: 301-504-1181 LOCAL POINT OF CONTACT (POC): Ray Waits Email: roy.waits@USDA.gov USDA, ARS NSL 589 McElroy Drive Oxford, MS 38655 Phone: 662-232-2933 Steve Mooneyham Email: steven.mooneyham@usda.gov USDA, ARS NSL 589 McElroy Drive Oxford, MS 38655 Phone: 662-232-2985 ADMINISTRATIVE OFFICER (AO): Darren Middleton Email: Darren.Middleton@USDA.gov USDA, ARS NSL 589 McElroy Drive Oxford, MS 38655 Phone: 662-232-2908 -- 3 of 10 -- 4 LAB DIRECTOR: Dr. Martin Locke Email: Martin.Locke@usda.gov USDA, ARS NSL 589 McElroy Drive Oxford, MS 38655 Phone: 662-232-2009 ENGINEER PROJECT MANAGER (EPM) J. Kevin Magee, PE Email: kevin.magee@usda.gov USDA, ARS, SEA Facilities EPM 141 Experiment Station Road Stoneville, MS 38776 Phone: (662) 336-0712 3.0 SCOPE OF SERVICES: The Contractor shall provide all professional services necessary for the accomplishment of the contract project and such required services shall be in accordance with requirements as described herein. a. The Contractor shall provide services for the following tasks marked by an “X”: [X] Provide a technical proposal and cost proposal to complete the project as per project requirements. [X] Provide information for 3 reference projects with similar scopes of work along with contact information for each project. [X] Complete the project as per project requirements. 4.0 PROJECT REQUIREMENTS: The Contractor shall furnish reference projects, a technical proposal, and a cost proposal for “Replace 3 Roof Mounted Air Handling Units, Repair one Air Handling Unit and Repair one Chiller B-1” at the USDA, ARS, National Sedimentation Laboratory at Oxford Mississippi. The project is located at the USDA ARS National Sedimentation Laboratory, 589 McElroy Drive, Oxford, MS 38655. a. The Contractor will work with site personnel to ensure project is accomplished in a timely manner. b. Davis Bacon Wage Rates apply to all construction contracts in excess of $2,000. Employee payroll logs for the project will be required to verify wage rates are being adhered to. 4.1 BID SCHEDULE: a. The Base Bid shall include all work described in 4.2 Description of Work. -- 4 of 10 -- 5 4.2 DESCRIPTION OF WORK: 4.2.1 Background and Objective – Building 1 has three roof mounted AHUs systems, 1 interior mounted first floor AHU and one roof mounted chiller that provide heating and cooling to Building 1 that are damaged and are need of repair or replacement. These systems are currently inoperable. Due to the approaching summer months, timely replacement is imperative. The objective of this project is to replace 3 roof mounted AHU, repair the coils in the interior mounted AHU, and replace the coils in the chiller and accomplish the work in a timely fashion as the absence of these systems will render these parts of the building uninhabitable. 4.2.2 Base Bid: The AHU replacement work shall consist of the following: • Removal, disposal, and replacement of 3 existing York roof mounted units with units of equal capacity that are compatible with the respective existing chiller and heating water systems. • Capture refrigerant during demolition. • Replace Curb Adapters. • Replace Thermostats. • Install new Trane Performance Climate Changer (or approved equal) AHU to include all necessary plumbing, pipe insulation, and electrical work • After installation of new AHUs, charge systems with refrigerant to manufacturer recommended pressure. • Leak check circuit and charge to the name plate. • Provide all necessary materials handling systems and personnel to remove and replace units on roof • Provide 1 year parts and labor warranty. The interior Trane AHU coil replacement work shall consist of the following: • Removal and disposal of existing damaged coils in the Trane AHU • Install Trane replacement coils to match the existing system • Replace Refrigerant in condenser to manufacturer recommended pressure. • Leak check circuit, charge to the name plate, and perform startup. • Provide 1 year parts and labor warranty. The Trane Chiller repair to coils work shall consist of the following: • Removal and disposal of existing coils • Install new direct replacement coils which are compatible with the existing system • Replace Refrigerant in condenser to manufacturer recommended pressure. • Leak check circuit, charge to the name plate, and perform startup • Provide 1 year parts and Labor warranty 4.3 Government Furnished Equipment\Services a. The Government will furnish a reasonable amount of electricity and water. 5.0 GENERAL REQUIREMENTS: 5.1 Permits: Where governing regulations and imposed codes and standards require notices, permits, licenses, inspections, tests, and similar items or actions in order to lawfully proceed with the -- 5 of 10 -- 6 required work, the Contractor shall obtain items and take those actions in accordance with the regulations of the governing authority. The costs of such permits, licenses, inspections, etc., are the obligation of the Contractor. 5.2 Site Visit: Bidders 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 firsthand any conditions rel…