A new audit report on the federal government’s Troubled Asset Relief Program is knocking the billing practices of the Venable law firm, and is questioning about two-thirds of the firm’s fees the auditors reviewed.

The 35-page report is set for release on Thursday, and it says Venable lawyers and timekeepers often failed to describe their contract work for the government program adequately. In some cases, they billed fees for time spent reviewing billing. In others, they used vague descriptions over and again.