This Solicitation opportunity from Kansas was posted on May 20, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Tomahawk Creek Wastewater Treatment Facility Process Improvements Project

Closed

2026-017 Addendum 1State & Local

Submission Closed06/25/2026, 08:00:00 PM UTC

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

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NAICS: 237990

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POSTED

about 13 hours ago

DEADLINE

in 23 days

AI Contract Overview

Sealed bids are solicited for Contract No. THM1-C031, covering comprehensive process improvements at the Tomahawk Creek Wastewater Treatment Facility in Johnson County, Kansas, under Solicitation No. 2026-017 Addendum 1. The scope includes multiple infrastructure upgrades aimed at enhancing operational efficiency, safety, and environmental compliance: odor control enhancements through customized rubber mat covers on BNR basins and installation of Odor Control System No. 4; separation and redirection of centrifuge slop flows to reduce solids buildup; ferric chloride feed addition to the primary sludge thickener to curb hydrogen sulfide emissions; modifications to enable direct discharge of thickened primary sludge to the co-thickened sludge wetwell, along with a fifth digester feed pump and SCADA-integrated pressure sensors; installation of a sludge cleanout manhole for future maintenance; access drive and scum pit cleanouts for primary clarifiers, plus electric actuators on six influent slide gates; replacement of potable water with plant effluent water for Micro-C dosing and rerouting discharge lines above grade for better visibility; addition of a second submersible mixer in two pre-anoxic zones to manage scum; replacement of a 21-foot ladder with a stair tower at Digester No. 3 for improved safety; replacement of corroded aluminum slide gates in the chlorine contact basin with corrosion-resistant materials; installation of an electric actuator and safety platforms on the secondary effluent gate and disk filter basins; and implementation of an isolated drainage system near ferric chloride unloading stations to prevent chemical spills from entering storm sewers, as mandated by KDHE. Bidders must submit a bid bond equal to 5% of their bid amount, issued by a surety licensed in Kansas, payable to the Johnson County Board of County Commissioners. All submissions must be made electronically via the IonWave portal in PDF format, meeting strict technical requirements including OCR, bookmarking, thumbnails, and a 10 MB file size limit. Bids are due by June 25, 2026, and must be submitted by the designated point of contact, Nicole Averell. The solicitation is open to all qualified offerors, with no set-asides specified, though local preference, apprenticeship program participation, and eligibility for individuals with disabilities or disabled veterans may be considered under state law. Contractors must comply with stringent packaging, preservation, and labeling standards for equipment, ensuring protection from moisture

General Info

Bids due June 25, 2026, for wastewater facility upgrades in Kansas, including odor control, sludge management, and safety improvements.

Agency

Kansas → Johnson County

NAICS

237990 - Other Heavy and Civil Engineering Construction

Place of Performance

KS, USA

Set-Aside

NONE

Documents

2026-017 Tomahawk Creek WWTF Process Improvements IFB Addendum 1

ifb

High

Addendum No. 1 for IFB No. 2026-017 Tomahawk Creek WWTF Process Improvements

amendment

High

Bid Bond for Johnson County Wastewater Tomahawk Creek WWTF Process Improvements

bid-bond

High

Invitation for Bid 2026-017 Tomahawk Creek WWTF Process Improvements Q&A

q-and-a

High

Questionnaire for Manufacturer Information Submission

questionnaire

High

Tomahawk Creek Contract 26 WWTF Expansion Electrical and Mechanical Plans V4

specifications

High

Tomahawk Creek Contract 26 WWTF Expansion General Notes Volume 6

specifications

High

Tomahawk Creek Contract 26 WWTF Expansion Structural and Mechanical Plans V2

specifications

High

Tomahawk Creek Contract 26 WWTF Expansion Structural Drawings Volume 4

specifications

High

Tomahawk Creek Contract 26 WWTF Expansion Volume 1 of 8

specifications

High

Tomahawk Creek Contract 26 WWTF Expansion Volume 7 of 8

specifications

High

Tomahawk Creek Contract 26 WWTF Expansion Volume 8 of 8

specifications

High

Tomahawk Creek WWTF Process Improvements 100% Drawings

specifications

High

Tomahawk Creek WWTF Process Improvements 100% Specifications and IFB

ifb

High

AI Contract Breakdown

Uniform Contract Format

Timeline

PhaseClosed

PostedMay 20

Solicitation

Response DeadlineJun 25

Deadline has passed

Submission Closed

06/25/2026, 08:00:00 PM UTC

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Organization & Contact Information

AgencyKansas → Johnson County

Contacts1 person available

OfficeKS, USA

Organization / AgencyKansas → Johnson County

Office AddressKS, USA

Contacts

Nicole Averell

+1 (555) 000-0000

Full Description

S e a l e d b i ds f or Bi d R e q u est No. 2026-017 f or J o h nson C o u n t y W a s te w a ter Tomahawk Creek WWTF Process Improvements Project – Contract No. THM1-C031. The w ork co n s i s ts of th e f ol l o w i n g improvements to the Tomahawk Creek WWTF : A. Odor Control Improvements: Installation of covers on the BNR Basin anaerobic and pre-anoxic basins, and addition of Odor Control System No. 4. Customized rubber mat covers will also be added to the BNR Influent Splitter Box and RAS Splitter boxes to mitigate odor complaints and improve operational flexibility for VFA production. B. Sidestream Nitrogen Treatment Improvements: Separation of centrifuge startup/shutdown slop flows from the main centrate discharges and redirection to the plant drain to reduce solids accumulation in the Centrate Holding Basin. C. Gravity Thickener H 2 S Reduction: Addition of ferric chloride feed capability to the Primary Sludge Gravity Thickener/Fermenter to reduce hydrogen sulfide generation and loading on odor control units. D. Co-Thickening Improvements: Modifications to allow thickened primary sludge (TPS) to discharge directly to the Co-Thickened Sludge (CTS) wetwell, addition of a fifth digester feed pump for continuous mixing, and installation of pressure sensors on digester feed pump discharge piping with SCADA integration. E. Sludge Cleanout Manhole: Addition of a sludge cleanout manhole over the (3) 4” CTS lines between the Solids Processing Building and Digester Control Building to facilitate future line cleaning. F. Primary Clarifier Improvements: Construction of an access drive and installation of cleanouts for scum pit drainpipes, and addition of electric actuators to six PC Influent Slide Gates at the Headworks Building. G. Micro-C Dosing Improvements: Replacement of potable water with Plant Effluent Water (PEW) as carrier water for Micro-C dosing, and rerouting of Micro-C discharge lines above grade for improved visibility and control. H. Pre-Anoxic Mixers: Addition of a second submersible mixer in pre-anoxic zones PAX1-1 and 3-1 to facilitate the movement of scum out of pre-anoxic zones. I. Digester No. 3 Access Improvements: Replacement of the existing 21-ft tall cageless ladder with a stair tower to improve safety and accessibility to the digester roof. Demo of existing ladder. J. Chlorine Contact Basin Improvements: Replacement of all aluminum slide gates with corrosion-resistant materials due to chloride-induced deterioration. K. Filter Complex Improvements: Installation of an electric actuator on the secondary effluent/filter influent gate for automated wet weather operation, and addition of safety platforms to the eight disk filter basins to enhance maintenance access and safety. L. Storm Drain Isolation near Ferric Tanks: Installation of an isolation drainage system near the ferric chloride truck unloading station to prevent chemical spills from entering the storm sewer system, as identified by KDHE. Bi d d e rs s h a l l su b m i t w i th t h e i r b i d a b i d b o n d i ss u e d b y a s u r e t y c o m p a n y l i c e n se d to do b us i n ess i n t he S t a te of K a nsas i n t h e a m o u nt of f i v e p e r ce nt (5%) of the to t al a m o u nt of th ei r b i d. S aid g u ara n tee s h a l l b e m a d e p a y a ble to the B o a rd of Co u n t y Co m m i ss i o n ers of Jo h nson C o u n t y , K a nsas. All bids shall be submitted electronically on IonWave .