Cooling Tower & Chiller Replacement FAA, Palmdale, CA In May 1999 construction was completed on Cooling Tower and Chiller Replacement for the FAA in Palmdale, California. The 3.46 million-dollar project included the installation of two new cooling towers, cooling tower foundations, sump pit; pumps and plume with associated piping, power, controls and the installation of a pump monorail hoist.

Repair POL Tank Storage Facilities And Repair Refueler Parking Area Tennessee ANG, Nashville In June 1999 construction was completed on the Repair POL Tank Storage Facilities and Repair Refueler Parking Area project for the Tennessee Ang. in Nashville, Tennessee. The 2.01 million-dollar project involved the repair of the POL tank storage facilities and repair of the refueler parking area and the installation of an automatic tank gauging system.

Jet Fuel Storage Complex Arizona ANG, Tuscon In July 1999 Interstate Construction was presented with the United States Small Business Administration, Administrator's Award for Excellence. The award was given for their Replace Jet Fuel Storage Facility a 5.9 million-dollar project completed for the Arizona National Guard in Tuscon, Arizona.