Brushy Creek Regional Utility Authority Phase 2 Raw Water Delivery System Project

摘要

The Brushy Creek Regional Utility Authority (BCRUA) is a partnership of the cities of Cedar Park, Round Rock, and Leander, Texas. The Phase 2 Raw Water Delivery System is a new deep water intake and conveyance system at Lake Travis. The estimated $160M project includes two lake taps with multilevel screens; a 9,000 linear feet (LF) gravity intake tunnel with a minimum 8-ft internal finished diameter concrete liner; an underground suction chamber with 6 well shafts; a 30-ft diameter, 300-ft deep construction access shaft; a 2,600 LF transmission tunnel with an 84-inch welded steel final liner; an exit shaft approximately 155 feet deep at the end of the transmission tunnel; a 145 million gallons per day (MGD) pump station with 10 pumps; and a maintenance building for chemical feed systems to the intake shafts. The majority of the underground work will be in limestone of the Glen Rose formation. Final design is underway with an anticipated bid date of June 2021 and a construction start date of January 2022. Major project elements, design developments, constraints, procurement methods, and project schedule are presented herein.