SH 115 - Winkler County Texas Department of Transportation Winkler County, Texas The project consisted of rehabilitating 5 miles of SH 115 in Winkler County, Texas.  Major work activities included embankment; backfill; blading; proof rolling; flexible base compacted in place to a depth of 10”;  flexible base compacted in place to a depth of 18”; [...]

Environmental Restoration Disposal Facility – Super Cells 9 & 10 Construction Washington Closure Hanford Richland, Washington Hanford's Environmental Restoration Disposal Facility (ERDF) is a large landfill that is used for the treatment, disposal and storage of low-level radioactive, hazardous, and mixed wastes generated during the cleanup and remediation activities at the site. ERDF is comprised [...]

Hertzler Stage III Tailings Impoundment Stillwater Mining Company Nye, MT Construction consisted of a zoned earthfill embankment raise of 44 feet in elevation with 2.0-2.5:1 slopes and a 30 foot wide crest. A composite liner system consisting of HDPE geomembrane over a geosynthetic clay liner was installed over all the upstream slopes in order [...]

Rock Springs Landfill – Lined Cell Phase 1 Sweetwater County Solid Waste Disposal District #1 Rock Springs, WY  This Project involved approximately 15 acres of site development and the construction of a new lined cell. Additional work scope activities included the installation of a leachate collection system, the construction of two (2) leachate evaporation ponds [...]

Laramie Landfill Improvements City of Laramie Laramie, WY  The project consisted of the expansion of an existing landfill facility and facility improvements. Major items of scope included the construction of: An engineered containment cell Leachate collection system Evaporation pond Stormwater pond Baler building and office (baler, conveyor and tie system) Z-wall recycling depot Scale house [...]