Investor Presentaiton

COMPETITIVE STRENGTHS Well-Positioned Industry Leader • • • Largest, most flexible capacity in the market Skilled project management group In-house fabrication capabilities provide a complete engineered system Added core competency in precast concrete provides new opportunities for potential future expansion and/or acquisitions Water control systems acquired via ParkUSA provide unique advantages for growth in both the commercial and residential construction markets . PermalokⓇ provides superior product to the microtunneling market Dedicated staff focused on improving operational efficiencies at the plant level (internal programs, lean initiatives, etc.) National footprint enables low freight costs 8

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