F1 — original pdf

Backup

Title of Presentation Presentation Date Zebra Mussel Mitigation Update March 11, 2020 Name of Person, Assistant Director Mehrdad Morabbi, P.E., Operations Manager – Water Treatment Last presentation to W&WW Commission (9.11.19) W&WW Commission 9.11.2019 - ZM Briefing Update 2 LCRA’s Zebra Mussel Workshop (11.6.19) Summary • Lake Travis spawning April-July • Lake Austin spawning May-October • Suggested cleaning and inspection December-March • Expect elevated reproductive activity in 2020 3 Lake Travis Veliger Density 4 Lake Austin Veliger Density 5 Copper Sulfate Feed Facilities • Handcox WTP permanent chemical feed system is in operation • Received TCEQ approval to feed copper sulfate at Ullrich WTP and Davis • Ullrich WTP site permitting is in progress and expected to be completed in • Davis WTP site permitting is in progress and expected to be completed in WTP (1.29.2020) April June • Moving forward with temporary feed equipment to be operational in May at Davis and Ullrich water treatment plants • Permanent facilities are expected to be completed this fall 6 Copper Ion Generation • FIFRA Registration • Not yet NSF Approved but expected soon • This system is still under consideration 20 MGD Copper Ion Generator Lawrence, KS 7 Intake Cleaning & Inspection Cleaning and inspection • Ullrich WTP • Davis WTP • Handcox WTP 10.21.2019 11.04.2019 12.09.2019 Handcox WTP Upper Intake Before and After Cleaning 12.09.2019 8