A04_Statement_of_Work.pdf

GANP Chiller Restoration

Statement of Work for the Interior Recoating of two chillers at the Gateway Arch National Park

Prepared by Lance Ott

07/06/2023

Table of Contents

1.0 Project Description / Summary:

2.0 Objectives:

3.0 Background:

4.0 Specific Work / Tasks:

5.0 Special Conditions / Requirements:

6.0 Place Of Performance:

7.1 Performance Period / Schedule Requirements:

8.0 Warranty:

9.0 Attachments:

1.0 Project Description / Summary:

This project will service the to restore the two chillers that control the climate in Gateway Arch National Park.

2.0 Objectives:

The National Park Service is looking for a qualified, licensed, and bonded contractor to perform the tasks required in section 5.0 to complete this project in a timely manner.

3.0 Background:

The chillers were installed in 2018 with the structural renovations at the Gateway Arch National Park Visitor Center. The Arch is currently open to the public and the chillers are necessary to ensure the health and comfort of the visitor at the park.

4.0 Specific Work / Tasks:

a. Site visit to review existing conditions, confirm scope and develop installation plans with sequence of work.

b. Contractor to provide materials and labor for removal of all rust, surface preparation and application of the epoxy protective system to rehabilitate the two 350-ton Daikin condenser tube sheet faces, end caps, and pour new gaskets (if applicable).

c. Contractor to remove all existing debris, rust, and fouling off the surfaces to be coated. Exposing the bare, clean metal, free from any corrosion, rust, or scale.

d. Contractor to repair all areas where corrosion and deterioration have occurred, and then apply epoxy, ensuring full coverage of the surface, and the proper thickness of the overall coating.

e. Contractor to perform a post-curing process of the epoxy by heating up the chillers to allow the atoms in the epoxy to improve cross-linking density.

f. Contractor will install a sacrificial anode after epoxy coatings applied.

g. Contractor to pour new caskets for all four end caps.

h. The Park will be isolating the chillers from service, draining, and removing covers.

i. The Park will be responsible for de-watering the tubes prior to the contractor arriving on site.

j. The Park is responsible for reassembling the chillers upon completion of the restoration.

k. The Park is responsible for getting the chillers back into operation.

5.0 Special Conditions / Requirements:

a. Proper disposal of debris and other waste materials will be done in accordance with all Federal, State, and Local regulations.

b. Contractor will supply all required parts and material to complete the job.

c. Furnish all required permits, license, and drawings from all agencies. Contractor shall prepare, obtain, and pay for all required permits prior to proceeding with installation work.

d. Contractor to meet all building codes and safety regulations required by local, state, and federal agencies, OSHA, Davis Beacon Act, and/ all National Park Service policies, and requirements.

e. Contractor is responsible to verify all measurements, and compatibility of component replacements.

f. Contractor is responsible for determining specific work practices to be utilized for all tasks.

g. Contractor will ensure one chiller remains operational at all times.

h. All work including work practices is subject to inspection and approval by the Contracting Officer Representative (COR) or park representative. Work or work practices are subject to inspection by regulatory personnel.

i. Contractor shall be responsible to repair any utilities, equipment supports, piping, conduits or wiring damaged during contract activities/construction and shall make all necessary repairs at Contractor expense.

j. Contractor to use CM 16E Transmittal form for all transmittals. (RFI, installation plans, cutsheets, etc.)

6.0 Place Of Performance:

a. Gateway Arch National Park 11 North Fourth Street, St Louis, Missouri 63102-1880

7.0 Performance Period / Schedule Requirements:

a. All work must be completed within 30 days of notice to proceed.

b. Work hours will be scheduled between 6:00 a.m. and 4:00 p.m. Monday through Friday. No Weekends or Federal Holidays.

Warranty:

a. Contractor shall warrant all material and installation workmanship for up to five years against any pinhole corrosion or defects

9.0 Attachments: Below: Photos of existing corossion inside of the chillers.