Johnson County Ionwave #2026-043

CMAR services for Middle Basin wastewater digester and solids improvements

Johnson County Wastewater is seeking a CMAR partner to upgrade solids treatment at the Douglas L. Smith Middle Basin wastewater facility while keeping operations running. - Buyer: Johnson County, Kansas; Johnson County Wastewater (JCW), including its Financial Management and Administration, Purchasing Division. The project serves the Douglas L. Smith Middle Basin Wastewater Treatment Facility. - Procurement: Construction Manager at Risk (CMAR) services for the Digester and Solids Improvements Project, Contract IMB1-C040 / IMB1-Contract 40. - Services: Preconstruction planning and design coordination, cost and risk estimates, constructability and value reviews, sequencing, maintenance-of-operations planning, long-lead equipment planning, and development and negotiation of a Guaranteed Maximum Price (GMP). Construction management, procurement, commissioning, training, and warranty services are conditional on County approval of the GMP and schedule. - Major project scope: Rehabilitate four anaerobic digesters; construct a 200,000-gallon digested sludge storage tank and a dewatering building; install three centrifuges; improve sludge thickening and FOG receiving; install two 600 kW combined heat and power (CHP) units; and replace the ferric chloride system. Detailed equipment and quantities are listed below. - Operational requirements: Phase work to keep the solids treatment train and FOG receiving service operating during construction. The project primarily renews aging infrastructure rather than expanding treatment capacity. If the parties cannot agree on an acceptable GMP, JCW may use a separate design-bid-build procurement. - Estimated project cost: Planning materials cite approximately $120 million in construction costs in 2025 dollars and approximately $150 million with escalation to the anticipated construction midpoint. These are project estimates, not a stated CMAR fee or contract value. - Named equipment manufacturers: Andritz, Alfa Laval, Flottweg, and Westfalia are identified as centrifuge manufacturers evaluated in the planning material. No CMAR firm is named as a selected vendor. - Additional planning context: One facility-plan attachment lists equipment for broader, phased plant upgrades beyond this CMAR solicitation. Those items are included in the line-item list for completeness and should not be read as confirmed purchases under this contract.

Description

Johnson County Wastewater seeks statements of qualifications from firms to provide construction manager at risk services for the Middle Basin Wastewater Treatment Facility Digester and Solids Improvements. This is Phase I of a three-phase selection process: firms will submit qualifications for shortlisting, shortlisted firms will submit proposals, and finalists will be interviewed. The scope includes pre-construction services and preparation of a guaranteed maximum price, with potential construction-phase services. The solicitation estimates the total project cost, including engineering, easements, land acquisitions, and construction, at $150 million.

View original listing