Water Wells - Drill wells to maximum of 150' in depth. No mud rotary or air rotary. We have truck-mounted and track rigs as narrow as 5". Hence, we can install wells in side-yards (more than 5" from property line) and back yards, for example in the city of Santa Rosa and you won't be limited by the cost of city water. Horizontal Water Wells - We drill up to 400" horizontally into hillsides. It is a good solution if one can't find water vertically and/or want to develop a spring area. No county permit required for horizontal wells. Environmental and Geotechnical Drilling - Large rigs to small ones - inside buildings - down hillsides - auger and sonic - geoprobe - conductor casing - monitor wells - hydro-punch - inclinometers - vapor probes - etc. Ground source Heat Pump Borings - We are certified by IGSHPA and use our Sonic Rig.