The U.S. Army Corps of Engineers Baltimore District is considering a re-procurement for bulk Fluorosilicic Acid 25% to be used at the Washington Aqueduct. The contract would be a single-award, indefinite-delivery indefinite-quantity type with a five-year ordering period. The chemical must meet specific ANSI/AWWA and NSF/ANSI standards. The opportunity is classified under the NAICS code for Other Basic Inorganic Chemical Manufacturing, which has a small business size standard of 1,000 employees.