The United States Department of Agriculture ? Agricultural Research Service (USDA-ARS) National Soil Dynamics Research Unit (SDRU), located at Auburn University, will be relocated to USDA?s Research Park (Lab) and Aquatics (Storage) Sites. This project requires the construction of a state-of-the-art laboratory building and site related utilities and pavements, and optional lab annex/headhouse, greenhouse and other site related buildings and features at the Research Park Site.The North American Industry Classification System (NAICS) code for this project is 236220.