37 Construction consultation; Construction of gas infrastructure facilities, electric power infrastructure facilities, foundations, and pipelines; Construction project management services; Electrical contracting; Excavation services; Installation, maintenance and repair of underground, horizontal directional drilling pipes, poly pipes, electric conduits, and steel gas pipes; Installation, maintenance and repair of electric power infrastructure facilities, overhead and underground electrical transmission systems, overhead and underground electrical distribution systems, duct bank systems, electrical substations, sub-grade electric grounding systems, electric utility network systems and telecommunication utility network systems; Installation, maintenance and repair of foundations for transmission towers, wind farms, general concrete foundations, large drill diameter foundations, and deep drill foundations; Installation, maintenance and repair of gas infrastructure facilities, pipeline infrastructure facilities, gas distribution systems for both poly and steel pipe, poly and steel pipe gas lines, and regulator stations