GSG provided civil engineering and environmental oversight services for the replacement of a 50-year-old 24” gas main crossing the Galena River. Due to soil conditions, the installation was completed via open-cut rather than directional drilling.

Scope of Services

• • Designed streambank stabilization for excavation areas and airbridge access
  • Installed 3’ gabion baskets from river bottom up to 6’ for erosion control
  • Restored upper banks using Envirolok bags with native plant plugs
  • Oversaw installation of stabilization systems and vegetation during construction