Technical Specifications - Summary of Changes from Amendment 0004 Version to Amendment 0005 Version.docx

This document is a Technical Specifications Summary of Changes detailing modifications between Amendment 0004 and Amendment 0005 for the McNary Powerhouse Turbine Draft Tube Slot Filler contract (Solicitation Number W912EF25BA002). The changes specifically impact three technical specification sections: SECTION 01 11 01.00 28 SUPPLEMENTARY REQUIREMENTS, SECTION 01 55 29.10 28 CONTRACTOR WORK, ACCESS AND STAGING AREAS, and SECTION 05 50 14.01 28 STRUCTURAL METAL FABRICATIONS, with revisions made to paragraphs related to delivery requirements and restrictions.

The associated federal contract opportunity is an Invitation for Bid (IFB) issued by the Department of the Army Corps of Engineers Engineering District Walla Walla. The solicitation has undergone multiple amendments, with Amendment 0005 (uploaded 11/18/2025) introducing new clauses including 52.219-9 ALT 1, 52.219-16, and 252.219-7003, and updating Instructions to Offerors to include a Subcontracting Plan requirement. The bid due date was previously extended to 12/8/2025 at 12:00pm Pacific, and the procurement involves technical specifications and plans for turbine draft tube slot fillers.