Tetra Tech, Inc. · NASDAQ:TTEK
Tetra Tech — Technical Presentation (December 2021)
5 slides from Tetra Tech's technical presentation, Dec 14, 2021
Slide 1: Mississippi River Flooding Economic Impact & Nature-Based Adaptation Solutions
Mississippi River Flooding Economic Impact & Nature-Based Adaptation Solutions EPA Hypoxia Task Force, December 14, 2021 Our Cohort
Slide 2: What will a 1% flood look like in the future climate?
What will a 1% flood look like in the future climate? USGS and USACE gauges Representing all 100 MRCTI communities Hydrologic Analysis Median change in 1% flood discharge (relative to 2005) 50 % of locations 40 30 20 10 -10% 0% 10% 20% 2030 2050 2080
Slide 3: Several levees are at risk of overtopping
Several levees are at risk of overtopping Location Levee Probability of Overtopping for 2030 1% Flood Mississippi River at Grafton, IL Consolidated North County Levee System 1.074 Mississippi River at Winona, MN Winona City & Prairie Island 1.043 Mississippi River at Helena, AR Mississippi and White
Slide 4: Example of Shovel Ready Project and Mega Project
Example of Shovel Ready Project: St Genevieve Restoration along Levee #3 Example of a Mega Project: Vicksburg- Eagle Lake Restoration
Slide 5: Return on Investment: 200 Acre Hypothetical Wetland Reforestation
Return on Investment: 200 Acre Hypothetical Wetland Reforestation ● Key Assumption: City owns the land Price Starting in 2021 Carbon $20/MT CO2e ● If robust carbon and nutrient removal Nitrate $9.5/lb markets exist, even small NbS projects Removal can yield attractive returns Phosphate $4.2/lb Remov
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