Municipal, commercial and residential sewer and drain cleaning; design, maintenance and installation of any and all types of sanitary and water systems; municipal, commercial and residential excavation, namely land clearing, water and sewer drainage, septic system drainage, utility line excavation, foundation excavation, foundation installation, terrain grading; road construction; installation, maintenance and repair of municipal, commercial or residential septic tanks, sewers, drainage systems, water systems, hydraulic sewers, mechanical sewers, grease traps and grease tanks, subsurface disposal systems, catch basins, manholes, cesspools, and pump chambers; maintenance and rental of sanitary facilities, namely portable toilets; commercial and residential general contracting, construction, repair and remodeling; oil and fuel distribution and systems repair; municipal, commercial and residential drain cleaning and high pressure water jetting; leasing and rental of construction equipment, namely excavation equipment; hydro excavation; trenchless technologies; sewer and septic treatments, namely chemical and biological treatments, pipe grouting and video inspection of same