The solicitation is amended 0001 to update the wage rates. The Army Corps of Engineers, Kansas City District has need for construction services to remove navigation obstructions on the Missouri river at river mile 67-69. The general scope of the work includes, but is not limited to dismantling, demolition, removal, and disposal of navigation obstructions. Additionally, the scope of work includes survey requirements to collect preconstruction, progress, and final surveys for both removal and non-removal areas. Work consists of mobilization to the obstruction areas with appropriate removal equipment and the lowering of obstructions to the elevations specified or as directed by the contracting officer. All work to be performed will be completed by floating plant as no land access will be available. Mechanical methods will be used for removal of the obstructions. Contractor shall be required to be in full compliance with State and Federal Clean Water Act guidelines (Sections 404(b)(1) and 401 Water Quality Permits). The intention is to procure these services on a competitive basis. This requirement is a 100% total small business set-aside that will result in one firm-fixed-price award. The NAICS code for this requirement is 237990, size standard $45,000,000. Far 36.204 disclosure of the magnitude of the project: between $5,000,000 and $10,000,000.