A year after the project began, workers are only about halfway finished cleaning a heavy infestation of mold out of the Oklahoma County jail, the county engineer said Wednesday.

Stacey Trumbo told Oklahoma County commissioners that, because of a high jail population, the Oklahoma County Sheriff's Office had struggled to find space to move inmates out of cell pods, allowing workers to treat rooms for mold.

“Everybody's frustrated with that," Trumbo said. "The sheriff's office, my office, I'm sure you as commissioners will be frustrated with that."

At Wednesday's meeting, commissioners approved a change to a $300,000 contract they approved last January with mold remediation firm Tec-An Inc. The change allows the firm to clean mold out of a jail pod at an additional cost of $15,125.