Slick Rollers, LLC - Contract No. 14457

As part of our annual audit plan, we performed an audit of costs billed to the Tennessee Valley Authority (TVA) by Slick Rollers, LLC (Slick Rollers) for coal and limestone handling system support materials and/or services at various TVA fossil plants under Contract No. 14457. Our audit objective was to determine if costs were billed in accordance with the terms and conditions of the contract. Our audit scope included about $10.3 million in costs billed to TVA from August 13, 2019, through December 16, 2021. In summary, we determined Slick Rollers overbilled TVA $139,132, including (1) $104,012 in ineligible and unsupported material and equipment costs, (2) $32,564 in ineligible and unsupported labor costs, and (3) $2,556 in unsupported per diem costs. We also noted several opportunities to improve contract administration by TVA. Specifically, we found <br> (1) the contract contained language requiring subcontractor approval that does not match TVA's intent, (2) Slick Rollers began work on two POs prior to approval by TVA, and (3) Slick Rollers did not provide a proper invoice to TVA as required by the contract. (Summary Only)