Evaluation of phase 1 and phase 2 sampling and analysis data for the Gunite and Associated Tanks at Oak Ridge National Laboratory, Oak Ridge, Tennessee

The Gunite and Associated Tanks (GAAT) are located at Oak Ridge National Laboratory in Waste Area Grouping 1. GAAT is designated as a Comprehensive Environmental Response, Compensation, and Liability Act site. GAAT is considered a high priority for remediation because of the potential risk associated with the contaminants of concern and the condition of the Gunite walls. The objective of this report is to (1) support the GAAT treatability study and (2) provide input to the Record of Decision for the remediation of selected tanks that are part of the North Tank Farm and the South Tank Farm. This report presents a statistical and operational evaluation of GAAT sampling and analysis of data from various tanks in the North Tank Farm and the South Tank Farm