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The Orange County Board of Supervisors is scheduled at its Oct. 6 meeting to vote on awarding a four-year contract for $101.8 million to Swinerton Builders in Irvine to refurbish and seismically retrofit buildings and terminals at John Wayne Airport.

The agenda item for the meeting said 89% of the money would come from an airport construction fund and 11% from the facility’s operating fund.

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The multipart item includes an authorization for the airport director to transfer up to $70 million in bond financing that was previously authorized but never used to “reimburse John Wayne Airport for eligible costs” on the projects.

Work includes paint, carpet, heating and air conditioning work, renovated restrooms, signage, upgraded accessibility required under the Americans with Disabilities Act, and a new service-animal relief area, in addition to retrofitting of the terminals to protect prevent earthquake damage.

The contract budget estimates a cost of $10.4 million this year, $45.6 million next year, $36.7 million in the third year and $9.1 million in the last year of the contract, which concludes in 2019.

Swinerton’s bid came in below a $136 million bid by Balfour Beatty Construction, which is based in Dallas but has an office in Irvine.

Another agenda item notes the supervisors will discuss in closed session the appointment of a new airport director.