R--THE NASHVILLE DISTRICT U.S. ARMY CORPS OF ENGINEERS HAS AWARDED A SOLE SOURCE CONTRACT TO HATCH ASSOCIATES CONSULTANTS, INC. FOR FINITE ELEMENT ANALYSIS MODELING ARCHITECTURAL ENGINEERING SERVICES FOR CHICKAMAUGA LOCK.

This contract action was accomplished using other than competitive procedures because there is only one responsible source due to a unique capability provided, and no other supplies or services will satisfy agency requirements (FAR 6.302-1). See posted J&A for further information. The Nashville District U.S. Army Corps of Engineers has awarded a sole source contract to Hatch Associates Consultants, Inc. of Amherst, NY for highly specialized services to update the existing finite element analysis model of Chickamauga Lock for the effects of concrete expansion due to alkali-aggregate reaction (AAR), combined with other applicable loads (dead load, post-tensioning, hydrostatic, thermal, etc.). The work will require the Contractor to calibrate the existing model to measured deflections and stresses from existing data survey points, inverted pendulums, growth meters, crack meters, joint meters, slot movement measurements and tendon strain meters and an initial analysis of present structure behavior. Using the calibrated model, the Contractor shall conduct an analysis with the current lock configuration that evaluates an additional 10 years of AAR effects. This procurement has been approved for other than full and open competition under the authority of 10 U.S.C. 2304(c)(1), Federal Acquisition Regulation 6.302-1- Only One Responsible Source and No Other Supplies or Services Will Satisfy Agency Requirements.