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Kokosing is a leader in underground utility installation including stormwater management, sanitary sewers, waterlines, and duct banks. We self-perform all wet utility installations on our projects. Our team members have the expertise and equipment to self-perform CCTV pipeline video inspections, pipe deflection testing, walkthrough inspections, structural inspections, structural and tank cleaning, hydro-excavating, jetting, and pipe cleaning in pipe diameters ranging from 4-inches to 120-inches.