Amendment 1 updates the Performance Work Statement paragraph 3.2 and an image.***This combined synopsis/solicitation Notice is being issued by the United States Army Corps of Engineers- Chicago District to inform interested contractors of the Districts intent to issue a solicitation for Thomas J. O Brien Lock Storage Area and Security Fence Upgrades, Chicago, Illinois.****PROJECT INFORMATION: Under the contract, the contractor will be required to provide the following construction services: the construction work includes building a storage area with chain link fence, expanding the boat ramp gates (security chain link gates), and increasing the height of the security chain link fence at the controlling works across the Thomas J. O Brien Lock and Dam area. Contracted personnel must be trained, certified, and equipped for all safety operations in accordance with (IAW) U.S. Army Corps of Engineers EM 385-1-1 standards.****ACQUISITION INFORMATION: Competition for this acquisition is RESERVED EXCLUSIVELY for Small Business Concerns. The North American Industry System Classification Code is 238990, with a small business size standard in dollars of $19.0 Million. The magnitude of cost for construction is estimated between $25,000.00 and $100,000.00. The Award date is planned for February 2026. ****The solicitation will be downloadable from the internet only. The project specification files are PDF files and can be viewed, navigated, or printed using Adobe Acrobat Reader. Once the package is released into advertisement at this website, interested bidders may download the full package, which includes- specification and drawing files.****IMPORTANT POLICY: Contractors are REQUIRED to be registered in the System for Award Management (SAM) AT THE TIME ITS BID/PROPOSAL IS SUBMITTED to comply with the annual representations and certifications requirements. Registration can be completed free of charge at www.sam.gov. Contractors must register with sam.gov, prior to registering with the DoD Procurement Integrated Enterprise Environment (PIEE) system. Your firm must register with PIEE in order to access the solicitation and to place a bid/proposal in response to the upcoming USACE Solicitation. Use the PIEE System Registration link: ? https://piee.eb.mil, and follow the instructions on their website. Request for Solicitation packages made by telephone, fax, or e-mail will not be honored. **** Quotes MUST be Submit electronically via PIEE online submission. ****Submit all inquiries to the point of contact Stephanie Boyd at Stephanie.l.boyd@usace.army.mil, no later than January 30, 2026. ****Please include Solicitation Number W912P626QA005 in the email subject line for all correspondence. ****The Point of Contract for this acquisition is Ms. Stephanie Boyd at Stephanie.L.Boyd@usace.army.mil.****Please include Solicitation number W912P626QA007 on all correspondence.