Attachment A - Cooling Tower SOW.pdf

SCOPE OF WORK—COOLING TOWER #1 REPLACEMENT

DESERT SOUTHWEST REGION – PHOENIX OFFICE CAMPUS

5 MAY 2021

CONTENTS

A. Scope of Work

B. Equipment listing included in this SOW

1. Site Visit required

2. Design, as needed

SCOPE OF WORK

1. INTRODUCTION/OBJECTIVE

Perform work for Western Area Power Administration’s (WAPA), Desert Southwest

Region (DSW) for the replacement of cooling tower providing service to the environmental controls for the DSW Campus.

The proposed acquisition and upgrade of the cooling tower is to be located on the South side at WAPA-DSW’s Phoenix office (located at 615 S. 43rd AVE, Phoenix, Arizona). The proposed site is located on the Phoenix office campus’s main building.

To ensure best results, the contractor shall at a minimum, undertake at least one on -site visit to the WAPA-DSW Phoenix office campus prior to the initiation of any work to get a good overall visual and technical understanding of the project requirements (i.e., occupant considerations as it relates to sewage, water, heating, air conditioning, and electrical considerations).

During the initial visit, contractor shall ensure that he/she not only get a good overview of the proposed project and work site and initiate and complete all other appropriate precursor pre-construction activities such as: ensuring that the proposed activity conform to all applicable building codes; taking all appropriate measurements and photographs; making all appropriate sketches of the proposed project and project site; and taking notice of all relevant requirements/considerations.

As part of the project deliverable, the contractor shall prepare and submit his best determination of the estimated cost of constructing and installing a new cooling tower.

WAPA-DSW may use the cost estimate in lieu of preparing a government project cost estimate for the purpose of comparing the price reasonableness of any and all offers received by WAPA-DSW in response to the proposed RFP.

The Federal point of contact shall be Mr. Todd Kirsch at (602) 605-2760 or kirsch@wapa.gov.

mailto:kirsch@wapa.gov

2. REQUIREMENTS

A. Existing Tower Removal

a. The contractor shall completely remove the existing Tower Tech, Fiber-glass cooling tower, Model TTXE-021930, Serial Number, 2005-023-03. This includes, but is not limited to, any necessary disconnections from water supply, electrical supply, and any other servicing utilities. If foundation is damaged during removal operations the contractor will return the foundation to like-new through repair or replacement. If any existing utilities are damaged during deconstruction the contractor will repair or replace.

b. The contractor will disconnect and remove the fans and fan motors and coordinate with the COR to have them retained and stored by DSW Facilities.

c. The contractor will dispose of the removed tower in accordance with applicable WAPA, local, state, and federal guidance.

B. Install Evapco, or suitable substitute, stainless steel cooling tower

a. The contractor shall install a new stainless-steel cooling tower. Evapco brand is desired, but WAPA will consider substitutes and alternatives recommended by the contractor. The contractor will present a complete package for recommendation.

b. The contractor will follow all applicable codes and regulations that pertain to the installation and operation of a cooling tower.

c. The new cooling tower must be equal to or larger than the existing towers in gallons provided but must fit within the existing footprint for the cooling towers.

d. The new cooling tower must be compatible with DSW’s existing chiller system consisting of three (3) Daikin Magnitude model WMC036, Magnetic Bearing

Centrifugal Chillers, and one (1) Daikin Trailblazer model AGZ090ED Air-

Cooled Scroll Compressor Chiller.

e. Towers must be able to be accessed correctly for all maintenance and repair actions as necessary. Contractor will place tower on a stand which provides a minimum of 5-feet of clearance from the finished surface to the closest point on the chiller. Allowing maintenance personnel access to the bottom of the chiller as necessary.

f. Water, drain, chemical feeder, and electrical lines servicing the towers will be modified or installed and connected as needed by the contractor to ensure full functionality of the cooling system.

g. The contractor will use approved, matching or suitable substitute materials during installation to include, but not limited to, additional piping, both water, drain, and electrical and any additional components to include, but not limited to, electrical, controls, water or drain system, or treatment system.

h. The contractor will use corrosion resistant materials, or will treat corrosion susceptible materials with appropriate and approved coatings, such as, but not limited to paint and primer.

i. The contractor shall fill the tower and test operation to ensure it functions properly and flawlessly with our existing system, to include but not limited to the associated chiller and controls system.

j. The current cooling operation is fully functional. The new cooling tower must be fully operational and return the WAPA chiller operation to full functionality as it was before replacement. This includes all subsystems servicing the cooling tower to include, but not limited to the water treatment system and controls system.

k. The government expects this project to be “turn-key”. Upon completion, the climate cooling operation at DSW must be restored to full functionality with

100% reliability and no issues.

C. FINAL CLEAN UP

Final cleaning up shall be performed to the sufficiency of Western Area Power Administration.

3. MATERIALS/EQUIPMENT

The contractor retains the sole responsibility on moving or receiving all equipment and materials. Coordination of deliveries must be coordinated with Western Area Power

Administration a minimum of 24 hours before scheduled receipt or delivery.

4. DELIVERABLES

A. Specifications set (Specifications set should not include contractual language) but include mechanical specifications, drawings, and sound data to include validation of CTI ATC-128 compliance.

B. Estimated timeline for the completion of the project once an award is made

C. Drawings or schematics detailing removal and installation

D. All manufactures specifications, data, and applicable documentation relating to the installation, maintenance, and warranty associated to the cooling tower and equipment installed by the contractor.

5. CONSIDERATIONS

a. Energy efficiency in the selection and placement of fixtures and components.

b. Ease and cost of maintenance for selected fixtures, components.

c. Most efficient utilization of space.

d. Compliant with ADA requirements

e. At a minimum the contractor will incorporate applicable codes and standards such as UBC, UPC, NEC, NFPA, CA. Title 24, (ISC) Interagency Security Committee, and WAPA 470.1i.

6. DRAWINGS AND PICTURES

1a. Current location of tower 1b. Current location of 3 towers

1c. Possible new location 1d. Daikin Magnetic-Bearing Chiller