TVA OIG retained Marshall Miller & Associates, Inc. (Marshall Miller) to conduct a peer review of the Stantec Consulting Services, Inc. (Stantec) stability calculations and construction documents for the Dike C Buttress at the Kingston Fossil Plant (Kingston). Dike C refers to the remaining section of the Kingston coal ash containment that did not fail in the December 22, 2008, spill. It is Marshall Miller's opinion that the planned Dike C Buttress produces stability enhancements that are sufficient based on Stantec's drained slope stability analyses.