56 Contracting Squadron, 14100 W Eagle Street, Luke AFB, AZ 85309-1217

Y -- CONSTRUCT CENTRAL CHILLED WATER PLANT SOL F02604-98-R0009 DUE 022398 POC Darlene Brown @ (602) 856-3436 x264 or Capt Michael O'Connor @ (602) 856-3432 WEB: HQ AETC Contracting, http://www-contracting.aetc.af.mil. E-MAIL: click here to contact the contract administrator via e-mail, brownd@lukgate1.luk.aetc.af.mil. This project was designed by a local Architectural & Engineering Firm through Luke AFB and not through the Corps of Engineers. LUKE AFB, NOT THE CORPS OF ENGINEERS, will manage the Contract Administration and Construction inspection of this project. This project covers the construction of a 4900 Square foot Central Chilled Water Plant Building with an underground thermal storage tank of 4000 ton-hours of cooling capacity, having an area of 5000 square feet and a clear height of 20 feet to the bottom of any obstruction and mechanical yard for the equipment needed to provide central chilled water for the buildings listed on the drawings. Landscaping shall be provided around the building to create a pleasing visual appearance from the surrounding area. The majority of work on this project is mechanical and a mechanical contractor may be the prime contractor and sub-contract the structural, electrical, and other non-mechanical work or a general contractor may have sufficient capabilities to perform allphases of work required. The central chilled water pumping system shall be a primary/secondary type. The existing buildings are generally not equipped with two-way coil valves or variable speed pumping. These buildings shall have a three way diverting valve installed at he chilled water inlet to each building in order to maintain maximum chilled water return temperature to minimize pumping and to provided the maximum temperature differential for the thermal storage system. Factory pre-insulated PVC pressure carrier pipe shall be of gasketed bell joint construction to accommodate pipe movement, which eliminates expansion and contraction, stresses. The pipe shall range in size from (3) inch diameter to (14) inch diameter inclusive. The pipe shall meet and comply with ASTM Specification D-2241. The chilled water supply and return piping shall be installed in a common trench side by side, a minimum of (6) inches apart. The trench shall be deep enough to provide a minimum of (3) feet of cover above the top of thepipes. Concrete thrust blocks shall be poured prior to testing at every change indirection of the piping. After all the concrete thrust blocks are poured, the pope shall be hydrostatically tested at (1 1/2) times the design working pressure. The hydrostatic test shall be held for a period of (4) hours. No leakage shall be allowed. Trenching is estimated to be 10,000 Linear Feet. The electrical system for the central chilled plant building shall consist of 12,470 volt primary feeder, pad mounted transformer and 2500 Ampere service entrance section. Primary power for this facility shall be taken from an existing pad mounted high voltage electrical switch. Use an existing spare circuit on the 4-way pad mounted junction to feed the new pad mounted transformer. The local utility, Southwest Gas shall provide gas supply connection to the building. A new 42,600 square foot, three-story dormitory to the east and sough of the central chilled water plant building is currently under construction. Construction of the Chilled Water Plant and coordination of work on the site must be coordinated through the dormitory contractor. This contract shall include contractor quality control and partnering. The cost of the plans and specifications for this project is $126 per set. The estimated project value is between $1 million and $5 million. The contract period is 300 days. NOTE: Arizona does not observe daylight savings time. (0006)

Loren Data Corp. http://www.ld.com (SYN# 0103 19980108\Y-0015.SOL)