According to Blount Today, Blount County Commission, the Board of Education, and the Public Building Authority are having a workshop on Aug. 8th to settle some differences:

...issues have been raised about the cost of PBA services and allocation of costs among projects, division of responsibilities between the mayor’s budget staff and the PBA, the necessity of written contracts between the PBA and the county and payment for PBA services.

I have to agree with Blount County Mayor Jerry Cunningham, who is quoted in the article as saying there should be a written contract. There's too much money involved and too many important projects to be left to verbal agreements and memory that tends to get fuzzy over time.