Investor Presentaiton

UNDERGROUND UTILITY & INFRASTRUCTURE SOLUTIONS Strategic Focus on Base Business Downstream Industrial Services Drivers . Plant spending and upgrades have similar drivers to electric power and midstream infrastructure investments: aging infrastructure, required spend to comply with safety and environmental regulations, large and long-term supply of lower-cost hydrocarbon resources Substantial installed base of industrial facilities operating in a highly corrosive environment As plants age, critical process units' risk of failure increases significantly, requiring consistent and recurring maintenance investment – Est. 60%- 70% of annual capex Deferrals and other factors have resulted in increased turnaround activity since 2021- opportunity for reversion to mean activity levels Representative Industrial Services . • • Leading turnkey catalyst replacement service provider to refining and petrochemical industries Planned and emergency turnaround services Storage tank engineering, construction, repair, maintenance and fabrication; downstream and midstream infrastructure fabrication Turnkey downstream industrial piping maintenance, inspection, specialty mechanical and construction services $12,000 $10,000 U.S. Refiner Capital Spending $8,000 $6,000 $4,000 $2,000 $0 2014 2015 2016 2017 ($ in MM) 2018 Decline primarily due to impact of COVID-19 pandemic 2019 2020 2021 2022 ■ VLO MPC ■PSX PBF ■DINO ■DK Source: Refining customer data from S&P Capital IQ Representative Customers M DOW MARATHON Shell LBC TANK TERMINALS fj FLINT HILLS Sinclair resources ArcelorMittal Chevron Phillips Chemical Company LLC MOTIVA PLAINS ALL AMERICAN PIPELINE, L.P. Exxon yondellbasell I III II PHILLIPS 66 bp Valero Page 36 QUANTA

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