Specialties Septic Design and Installation, Site Leveling, Manufactured Home Pit Sets. T&J Excavating LLC is a premier company serving the Spokane and Tri-County area for many years with professional service and quality workmanship. We specialize in designing and installing septic systems, manufactured home pit sets, site leveling, clearing, building roads and driveways, water and utilities and dozer brush piling. If you are in need of any of these services, please call us to see what we can do to make your project a reality!