Projects

Upper Clark Fork Phase 5&6 Remediation Project

Owner: Montana Department of Environmental Quality

Project consisted of :

• Removal of 532,000 cy of Contaminated Soils along Rivers edge;
• Import of 405,000 cy of Floodplain material;
• Placement of 134,000 cy of cover soil;
• Development of 53 Acres of Wetland;
• Restoration & Enhancement of 25,000 feet of Stream Bank.

Supply Diversion Project 2017

Owner Supply Ditch Association

Project consisted of :

• Diversion of the Bitterroot River near Corvallis;
• Complete Structural Improvements to diversion Structure;
• Installation of Rip Rap for bank and scour protection.

Lilly Orphan Boy Mine Cleanup

Owner: Department of Environmental Quality

Project consisted of :

• Removal of 8,500 cy of mine waste;
• Transportation of waste over steep terrain at high altitudes;

Silver Bow Creek Cleanup Phase 9

Owner: Montana Department of Environmental Quality

Project consisted of :

• Removal of 429,000 cy of Contaminated Soils along Rivers edge;
• Regrade 122 acres of floodplain;
• Load, Haul, and Placement of 91,000 cy of vegetative backfill;
• Reconstruction of 12,600 feet of stream channel.

Kendall Leach Pad Capping Project

Owner:  ATNA Resources

Project consisted of :

• Capping of approximately 40 acres of cyanide heap leach pads.  Capping consisted of a 3 layer design comprised of a screened basal layer, a screened material with bentonite incorporation, and final topsoil cover.
• Excavation, Haulage, and Placement of 81,000 cy of a basal layer;
• Excavation, Haulage, Screening, and Placement 48,000 cy Bentonite Amended Cap;
• Reclamation of Borrow Site;
• Load, Haul, and Place 193,000 cy of Topsoil.

Utility Work

Multiple Owners

Intermountain Construction Services also conducts Civil work throughout SW Montana. Some types of Civil work we perform are:

• Mass Excavation
• Lined Storage Lagoons
• Irrigation Structures
• Water Storage Tanks
• Multiple types of Sewage Treatment
• Water and Sewer Main Installation
• Small Chlorination Buildings

Hillcrest Dump Reclamation

Owner: Montana Resources

Project consisted of :

• Slopping of mine dump
• Haulage and placement of a 28” alluvium cap
• Haulage placement of 8” cover soil

Butte High School Storm Water Improvements Project

Owner: Butte School District #1

Project consisted of :

• Installing an underground storm water storage system.
• The system was designed to handle surges from storm water events.  Due to the close proximity of Butte High School, public safety was paramount therefore an underground storage system was designed and constructed.

Trestle Area Remedial Action Project

Owner: Montana Department of Environmental Quality

Project consisted of :

• Removal of contaminated soil within the floodplain
• Haulage of contaminates to the Opportunity Ponds Repository
• Import of floodplain alluvium, and cover soil
• Stabilization of approximately 600 lf of Stream Bank