Case Study
Mill Creek Regional - Effluent Tunnel - 120-Inch Parshall Flume
Contractor
S.J. Louis Construction of Texas, Ltd. 
Consultant
Black & Veatch of Kansas City, MO
Background
Under design for several years, the Johnson County Mill Creek Effluent Tunnel project is designed to eliminate the risk of untreated sewage spilling into nearby Mill Creek and the Kansas River during heavy rains. Relying on gravity only to dischage treated effluent will also result in savings of $200,000 per year and reduce the carbon footprint and operating costs at the Mill Creek Plant.
A key element of the project was a new 120-inch fiberglass Parshall flume to measure the treated effluent prior to its entering the tunnel. After agrressive bidding, SJ Louis needed to reliable parnters to help bring the project in on time and on budget.
During the submittal review process, Openchannelflow worked with Black & Veatch to refine the channel configuration and fine tune the construction details of the flume to ensure that the end product met or exceeded the contract requirements and the end-user's expectations.
With limited laydown space available at the job site, close coordination between Openchannelflow and SJ Louis was important. While the flume was under construction, several shifts in timing of the construction of the effluent channel into which the flume was to be installed required Openchannelflow to speed / slow construction to accommodate the moving timeline.
Ultimately, the close coordination allowed Openchannelflow to ship the flume so that SJ Louis was able to begin the installation process the day after delivery had occured.
In short, working hand in hand with our contracting and consulting partners, Openchannelflow was able to meet the design performance of the project in a timely and cost effective manner.
