Jordan Valley — Nix Construction

JACK AND BORE WITH EXTENSIVE DE-WATERING

**JORDAN VALLEY WATER RECLAMATION**

FAIRWAYS AND WATER HAZARDS

Who doesn’t enjoy a nice day on the golf course, right?Well how would you feel about a few days UNDER the golf course?

The Jordan Valley Water Reclamation project provided just that opportunityfor the CH Nix crew. The project required a complex tunnel system to be bored underneath the Riverbend Golf Course, in Riverton, Utah. The Jordan Valley Water Reclamation facility needed a little over 2,000 feet of 36” carrier pipeline for their South Valley Special Improvement District project, and they had some interesting challenges to deal with in order to complete the task. The bore would need to be 58” diameter in order to accommodate the steel casing. The design dictated three separate bores, with the longest running 787 feet. Multiple launch and retrieval excavations for the TBM would be a must. The deepest section of the tunnel would run 35’ underground, in an area where water was consistently present at just 15’. This was going to be a hydro-pumping festival, to say the least. Deep wells were punched along the edges of the bore path for multiple dewatering systems, and the burrowing effort commenced in earnest. Even with the drainage defenses, the water still proved to be a worthy adversary. Eventually, an entire pond in the vicinity of the bore path would need to be emptied just to fend off seepage. In the end, the water lost this battle, at least long enough for the crew to get the tunnel finished. 2,040 feet later, the project was completed precisely and on time. The dewatering systems were dismantled, and the H2O was allowed to reclaim it’s natural place. In addition to the exciting water challenges, this project also has the distinction of the 787’ long tunnel section being one of the longest Tunnel Boring Machine (TBM) bores that CH Nix has ever completed. At least for now…