Sarpy County Ionwave #2026-419 Addendum 1

Sarpy County Gravity Sewer Repair – Prairie Corners Project

Sarpy County, Nebraska is seeking bids from qualified contractors for the Prairie Corners Gravity Sewer Repair project, focused on repairing and upgrading a gravity sanitary sewer system near Prairie Corners Road and 143rd Circle. - Government Buyer: - Sarpy County, Nebraska (Purchasing Office) - Project Scope: - Replacement of approximately 550 linear feet of 12-inch diameter sanitary sewer - Installation of two steel-cased bores (18-inch diameter), with an alternate bid for a full-length 18-inch steel casing bore (424 linear feet) - Construction of 54-inch diameter sanitary manholes, all requiring anti-microbial admixture per City of Omaha standards - Abandonment of existing 12-inch pipe using 15 cubic yards of flowable fill - Installation of external frame seals and manhole ring collars - Tapping into existing manholes and performing CCTV pipeline inspection (516 linear feet) - Dewatering, site clearing, grading, and restoration (including topsoil, seeding, and erosion control) - Erosion and sediment control measures (silt fence, wattle, construction entrances, concrete washout) - Aggregate bedding, geotextile fabric, and crushed rock trench stabilization - Products/Materials Requested: - 12" PVC sanitary sewer pipe (516 linear feet) - 18" steel casing (290 linear feet standard, 424 linear feet alternate) - 54" I.D. sanitary manholes (30 units) - External frame seals (3 units), manhole ring collars (3 units) - Geotextile fabric (27 square yards), 3" crushed rock (18 tons), aggregate bedding (258 linear feet) - Unique/Notable Requirements: - All new manholes must include an anti-microbial admixture - Compliance with City of Omaha Standard Specifications and Standard Plates - Option for full-length steel casing bore as an alternate bid - Strict environmental controls and restoration requirements - No specific OEMs or proprietary products are named; materials must meet referenced standards.

Description

Sarpy County is seeking a qualified contractor to make repairs to the gravity sanitary sewer located near Prairie Corners Rd and 143rd Circle. The work includes replacement of approximately 550 linear feet of 12 inch diameter sanitary sewer including two steel cased bores and appurtenant work. The project requires compliance with City of Omaha Standard Specifications and includes installation of manholes with anti-microbial admixture. Bids are to be submitted as sealed bids by June 23, 2026, and include various construction and installation tasks such as clearing, grading, traffic control, and sewer pipe construction.

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