37 Construction services in the field of public utility and telecommunication facilities, namely, planning, laying out, custom construction, renovation, installation, maintenance, and repair of public utility and telecommunication facilities, buildings, roads, streets, pavements, ducts, manholes, utility lines, utility equipment, electric lines, electrical equipment, gas lines, outdoor lighting, water lines, sewer lines, pipelines, cable lines, telephone lines, telecommunication lines, telecommunication equipment and telecommunication towers, gas and electric meters, telephone and telecommunication call centers, bridges and river crossings; earth moving and excavation; digging of trenches; and boring, drilling and plowing of earth