This multi-year, ongoing project addresses stabilization/reclamation of tailings dams on Silver Creek and improvements/upgrades to embankment dams/dikes and hydraulic structures forming a series of treatment ponds adjacent to the Dolores River.

Features

• Slope stabilization and installation of “rock mulch” covers for three abandoned tailings dams
• Riprap and grouted riprap armoring of realigned portion of Silver Creek bypassing the tailings dams/ponds
• Decommissioning of an existing SEO jurisdictional dam
• Modifications/upgrades to 6 or more existing earth dams at St. Louis Ponds System adit discharge treatment site, including emergency spill- ways and overflow and/or piped outlets at each dam (ongoing)
• Storm water runon controls (ditches/berms) to safely route uncontaminated flows around treatment system

SEH Services

• Site investigations (drilling, test pits, geotechnical testing)
• Hydrologic analyses for stormwater runon and flood control
• Evaluation of alternatives, including preliminary design and costing
• Civil, hydraulic, and geotechnical design analyses
• Final design and preparation of plans and specifications
• Construction observation, shop drawing review, and oversight of testing
• Technical design support during construction