Construction of civil engineering structures; civil infrastructure construction services; construction of underground utilities and electrical utility infrastructure, namely underground conduit systems, duct banks, utility vaults, and foundations; civil construction services, namely, excavation, trenching, grading, earthwork, site preparation, concrete construction, and asphalt paving; construction and installation of civil infrastructure supporting electrical transmission and distribution systems, substations, renewable energy facilities, battery energy storage systems, and electric vehicle charging infrastructure; construction project management services in the field of energy and utility infrastructure; utility undergrounding and infrastructure hardening services; emergency construction and restoration of utility infrastructure following natural disasters.