Who Can Prep Your Property for a New Septic Tank? Place your trust in our professional excavating company in Shepherd, MT Running utilities and connecting your water line is an important part of the construction process. When you're ready to break ground, turn to a professional excavating company. Jim Rooney Excavating serves homeowners and commercial property owners in Shepherd, MT. Since 1991, our owner has been clearing the way for new septic tanks, utility lines, drainage fields and more.