Carothers Road Solid Waste Facility and System Consulting

Whitman County, Washington
Whitman County Carother Road Solid Waste Facility
Whitman County Carother Road Solid Waste Facility

After 25 years of post-closure care, Whitman County retained Great West Engineering to evaluate the stability of the closed landfill unit to help discern when the County could eventually terminate post-closure care. Design improvements were made to continue responsible environmental protection of the system along with re-base lining the post-closure care period. Improvements to the landfill included fill and grading of settled areas, drainage improvements, cap liner repairs, and landfill gas vent system repairs and upgrades. The neighboring active limited purpose landfill cell required fill planning and closure/post-closure plan updates along with financial assurance updates. Great West also provides on-going hydrogeology support services with annual statistical assessments and reporting and landfill gas consulting and sampling.

Project Highlights

  • Final closure cap design improvements
  • Fill planning
  • Closure and Post-Closure Planning
  • Hydrogeology services
  • Landfill gas monitoring

Project Photos

View More Solid Waste Projects

Permitting • Treatment • Collection • Inflow & Infiltration (I&I) Studies • Lift Stations • Biosolids/Sludge Management • Preliminary Engineering Reports/Facility Plans