NTMWD BOARD MEETING April 23, 2020 Regional Service Through Unity - PowerPoint PPT Presentation

Regional Service Through Unity… Meeting our Region’s Needs Today and Tomorrow NTMWD BOARD MEETING April 23, 2020

Regional Service Through Unity… Meeting our Region’s Needs Today and Tomorrow RWPS Intake Tower Service Spillway Labyrinth Weir BOIS d’ARC LAKE UPDATE NTMWD Board Meeting April 23, 2020 Steve Long

BOIS d’ARC LAKE UPDATE CLICK TO EDIT MASTER TITLE STYLE Agenda • Covid-19 Impacts • Steps Prior to Impounding Water • Dam Schedule/Notch Closure Original schedule October 29 , 2020 Impounded • • Archeology • Construction Status • RES • CMAR 3 • CMAR 4

BOIS D’ARC LAKE UPDATE Covid 19 Impacts • Personnel – no impact • Schedule Impacts • Mitigation monitoring moved to May 2020 • Archeologists work 2 to a 1 meter block • Equipment Delivery Impacts • TWPL Large diameter butterfly valves 4

BOIS D’ARC LAKE BOARD UPDATE CLICK TO EDIT MASTER TITLE STYLE

BOIS D’ARC LAKE UPDATE CMAR 1 Archer Western - Bois d’Arc Creek Notch Closure Status • March 3 started Phase II • Phase II - Closure at Bois d’Arc Creek • Removed care of water berms/excavating creek bed to reach good foundation • March 20 cofferdam overtopped • 7-8 inches of rain 11 consecutive days of measurable rainfall • March 27 – April 8 cofferdam rebuilt to 495 • Recovery schedule submitted • Embankment is the critical path • AW (P&J) working double shifts starting April 20th • Expect double shifts to continue until end of summer 2020 • AW (P&J) continuing to place concrete at Intake and Service Spillway 6

BOIS D’ARC LAKE BOARD UPDATE CLICK TO EDIT MASTER TITLE STYLE Bois d’Arc Creek Notch April 12 https://youtu.be/kqGWFiEwZ4k

BOIS D’ARC LAKE EXECUTIVE COMMITTEE CLICK TO EDIT MASTER TITLE STYLE Intake Tower Debris Boom (off to the side)

BOIS D’ARC LAKE EXECUTIVE BRIEFING CLICK TO EDIT MASTER TITLE STYLE Service Spillway Chute Walls at Labyrinth

BOIS D’ARC LAKE UPDATE Archeology Mitigation • Site 114 SOW submitted – 4/16/2020 25 archeologists working in the field • • Schedule Impacts • Site 118 – July 15, 2020 • Site 120 – July 15, 2020 (1 remaining burial) • Site 178 – July 15, 2020 (1 remaining burial) • Site 244 – conditional scope of work approved • Site 151 – early start/conditional scope of work approved • Covid-19 impacts – Archeologists work 2 to a 1 meter block – Equipment sharing 12

BOIS D’ARC LAKE UPDATE Mitigation Full Service Provider Status • Plantings • 9,937 acres restored/enhanced • 4,372 acres remaining to be planted (includes Upper Bois d’Arc Creek) • 1,400,000 trees planted (600 trees/ac new; 200 trees/ac replant) • Total of 3,000,000 trees planted • 1,376 acres Upper Bois d’Arc Creek property purchased • Cultural resources survey pending/ARC developing survey SOW • Streams • 75,609 feet of streams restored • 48,629 feet of streams remaining • Hydrology restored to streams in the WRP 13

MITIGATION FSP RES – PLANTING AREAS CLICK TO EDIT MASTER TITLE STYLE

MITIGATION FSP RES – RESTORED STREAMS CLICK TO EDIT MASTER TITLE STYLE

BOIS D’ARC LAKE BOARD UPDATE 16

BOIS d’ARC LAKE UPDATE CLICK TO EDIT MASTER TITLE STYLE CMAR 3 – Water Tank, Reclaimed Basins, Filters, West Chem, Clearwell, & HSPS

BOIS d’ARC LAKE UPDATE CLICK TO EDIT MASTER TITLE STYLE Leonard WTP High Service Pump Station

BOIS d’ARC LAKE UPDATE CLICK TO EDIT MASTER TITLE STYLE Leonard WTP Clearwell

FM 897 BRIDGE – FINAL BEAM SET (300 TH ) CLICK TO EDIT MASTER TITLE STYLE

BOIS d’ARC LAKE UPDATE CLICK TO EDIT MASTER TITLE STYLE CMAR 4 – Austin Bridge and Road (Site 2)

BOIS d’ARC LAKE UPDATE CLICK TO EDIT MASTER TITLE STYLE CMAR 4 – Austin Bridge and Road (Site 3)

BOIS d’ARC LAKE CONSTRUCTION PHOTOS CLICK TO EDIT MASTER TITLE STYLE CMAR 4 – Austin Bridge and Road (Lake Operations Center) Lake Operations Building & Maintenance Building

BOIS d’ARC LAKE UPDATE CLICK TO EDIT MASTER TITLE STYLE QUESTIONS?