Douglas County Ionwave #CI-2026-0100 Addendum 2

Omaha Public Works seeks bids for North Downtown Conveyance Sewer construction (microtunneling, hand-mining, reinforced concrete pipe)

The City of Omaha Public Works Department is soliciting bids for the construction of a major combined sewer gravity conveyance system as part of the Northeast Omaha High-Rate Treatment Basin (NEOHRTB) Package 1 - North Downtown Conveyance Sewer (NDCS) project. - Project Scope: - Construction of a 1,970-foot-long, 72-inch diameter combined sewer using microtunneling and hand-mining methods - Includes launch and receiving shafts, site restoration, and multiple contingency allowances (e.g., environmental, street repairs, railroad flagging, construction management software) - Products and Materials: - Tunneling equipment (MTBM/slurry machines, diameters 60–120 inches, lengths >500 feet) - Reinforced concrete pipe for jacking operations - Services: - Tunneling, excavation, rock blasting, and support of excavation - Compliance with Union Pacific Railroad Pipeline Crossing/Encroachment License Agreement - Economic Sustainability Program (ESP) plan compliance, including SEB participation, workforce development, and youth engagement - Requirements: - Bidders must submit lists of proposed subcontractors and suppliers for tunneling, excavation, equipment, and pipe - Adherence to Omaha's SEB program with a 3.5% reserve - Submission of ESP plan, bid bond (5% if bid exceeds $50,000), insurance certificates, and compliance forms - Optional apprentice utilization incentive - Continuous tunneling operations (24/7 support) required in certain areas - Strict compliance with railroad standards and insurance coverage - No specific OEMs or vendors are named; bidders must designate their suppliers and equipment providers - Notable focus on economic sustainability, local labor, and apprenticeship incentives

Description

The City of Omaha is soliciting bids for the construction of a 1,970-foot-long, 72-inch inside diameter combined sewer gravity conveyance sewer using microtunneling and hand-mining within bedrock. The project also includes the construction of launching and receiving shafts for tunnel construction. Bidders must submit an Economic Sustainability Plan and may optionally utilize an apprentice incentive program. The project has a Small and Emerging Business reserve for 3.5% of the total bid and requires a bid bond or acceptable substitute.

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