The construction, installation, maintenance, or repair of pipelines using trenchless technologies including horizontal directional drilling, hydro vacuum excavation, air vacuum excavation, or road boring technologies. Includes technologies which pull the pipe through. Does not include the construction, installation, maintenance, or repair of pipelines using jack and bore technologies (dry, wet, or slurry), micro tunneling, pipe bursting, slip lining, cured-in-place pipe, pigging, pipe cleaning and similar technologies.