Douglas County Ionwave #CI-2026-0109 Addendum 2

Omaha seeks construction bids for NEOHRTB Package 2 sewer conveyance structures and facilities

The City of Omaha Public Works Department is seeking bids for construction services as part of the Northeast Omaha High-Rate Treatment Basin (NEOHRTB) Package 2 project. - Scope includes: - Construction of combined sewer conveyance structures, pipes, and appurtenances - Building the 11th and Izard Active Control (IZAC) flow diversion structure and Grit and Screening Facility (IZGSF) - Installation of twin 60-inch diversion sewers and supporting site improvements - Major products and materials: - HP 14x89 steel H-piles (driven: 2,131 VLF; pre-drilled rock socket: 303 VLF) - Architectural precast concrete units, concrete mixes, steel casing pipe, ductile iron process pipe - Plumbing fixtures and equipment, electrical components and systems - Notable OEMs referenced: - American Cast Iron Pipe Co. - U.S. Pipe and Foundry Co. - Contingency allowances for utilities, environmental, furniture, screening, security systems, street repairs, crack repair, fencing, and project management software - Unique requirements: - 3.5% Small & Emerging Business (SEB) reserve - Mandatory Economic Sustainability Plan (ESP) submission - Optional Apprenticeship Incentive Form - Verification of City of Omaha Mechanical Contractor License at bid time - Bid bond (5% of total bid if $50,000 or more) and compliance forms - Emphasis on SEB participation, environmental and safety compliance, and coordination with regulatory agencies and utilities

Description

The City of Omaha is soliciting bids for the construction of combined sewer conveyance structures, pipes, site work, and appurtenances. The project includes the 11th and Izard Active Control (IZAC) flow diversion structure, twin 60-inch diversion sewers, the 11th and Izard Grit and Screening Facility (IZGSF), and other supporting improvements. The anticipated notice to proceed date is December 23, 2026. The project has a Small & Emerging Business (SEB) reserve for ESB and SB Tier 1 & 2 categories for 3.5% of the total bid. Bidders must submit various forms and documents including a bid bond, economic sustainability plan, and verification of a City of Omaha Mechanical Contractor License.

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