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The first phase of referendum-related projects at Hinsdale High School District 86 will include a redo of the outdoor tracks, and a resurface of tennis courts and roofs at both Central and South high schools after board members recently awarded $4.2 million in contracts.

The largest contract went to F&G Roofing Co. for $3.44 million related to the planned work to renovate the roofs at both schools. F&G, based in Justice, submitted the lowest of the eight bids that board members received, ranging from $3.4 million to $8.3 million.

As part of the approvals, district officials also are hiring Mechanical Concepts of Illinois for $324,000 to replace eight air handling units at Hinsdale South since the school’s heating system is being converted from steam to hot water. Mechanical Concepts, located in Romeoville, submitted the lowest price of the eight contractors who entered bids.

The pipes, temperature controls and two other air handling units for building additions at South will be included in a future bid package, according to representatives at Pepper Construction, the district’s contractor for the projects.

The goal is to have the units at the school and ready to be installed by June, officials said.

Representatives with Pepper Construction said they checked the bids carefully and reviewed the companies’ previous projects to verify they could handle the district’s work. F&G Roofing also has done similar work to the roof at Hinsdale South in the past, said Marty Platten, of Pepper Construction.

For the running tracks at the stadiums and tennis courts of both schools, the district received only one bid for each project. Pepper representatives said the response is not unusual because the work requires specialty trades and few companies in the area do that type of work.

U.S. Tennis Court Construction Co., of Lockport, was awarded the contract to resurface the courts for a cost not to exceed $168,800. Track Surfaces Co., of Elburn, was hired for $302,000 to replace the track at Central and resurface the track at South.

Generally, the bids that were offered either matched the district’s budget for the project or came in about 5% percent less than the budgeted amount, officials said. Additional work that still is slated for the first phase of construction will put out to bid in January, Platten said.