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** EFFECTIVE JANUARY 21, 2026: The government has posted Amendment No. 0004 hereunder this Notice (please refer to the Attachments Section). ** ** EFFECTIVE JANUARY 13, 2026: The government has posted Amendment No. 0003 hereunder this Notice (please refer to the Attachments Section). ** ** Important Notice Regarding ProjNet Access for Solicitation W912P626BA001 **** It has come to our attention that some users may experience difficulties accessing the ProjNet website at projnet.org to submit questions regarding this solicitation. Our agency is aware of this technical issue and is actively working on a solution. In the meantime, vendors may access the ProjNet portal and submit questions using the following direct link: https://www.projnet.org/ProjNet/binKornHome/index.cfm. We apologize for any inconvenience this may cause and appreciate your continued interest in this U.S. Army Corps of Engineers (USACE) opportunity. **** ** EFFECTIVE JANUARY 8, 2026: The government has posted Amendment No. 0002 hereunder this Notice (please refer to the Attachments Section). ** ** EFFECTIVE DECEMBER 31, 2025: The government has posted Amendment No. 0001 hereunder this Notice (please refer to the Attachments Section). ** ** ATTENTION TO BIDDERS **************************************** PROJECT SITE VISIT JANUARY 7, 2026 ************************************ A pre-bid meeting and project site visit is scheduled for Wednesday, January 7, 2026, at 10:00 a.m. (Central Time). Interested contractors are to meet at location: Antioch, Illinois (42.480567, -88.004898), and must be supervised by USACE and the non-Federal sponsor. **************************************** PROJECT SITE VISIT JANUARY 7, 2025 ************************************ An amendment is forthcoming to incorporate the updated pre-bid meeting information. ** ** This Solicitation Notice, relates to Pre-Solicitation W912P625BA003, and is being issued by the United States Army Corps of Engineers - Chicago District for Dutch Gap Aquatic Ecosystem Restoration, Antioch, Lake County, Illinois. **PROJECT DESCRIPTION: The Dutch Gap Aquatic Complex, IL - Sec. 206 project spans 785-acres in Antioch, Lake County, Illinois, on land owned by Lake County Forest Preserves: restore stream, riparian, wetland, and buffering plant communities to provide habitat for migratory birds and local fish and wildlife. Restoration of aquatic ecosystems within the project area will reestablish hydroperiods and other hydrologic and hydraulic parameters to rehydrate former hydric soils to support critical wetland and riparian habitats. It will also reestablish native plant communities that will further diversify over time, resulting in greater quantity (acres) and quality of native plant communities. **Background: Intensive agriculture has led to the installation of drain tile networks, excavation of drainage ditches, and stream channelization, impacting natural hydrologic and other processes. Such impacts have enhanced flooding risks, mini…

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