TAILINGS IMPOUNDMENT RECLAMATION
This project included the design and construction of tailing impoundment reclamation. The tailing impoundment reclamation design included evaluation of seven existing tailing impoundments for reclamation and final closure. The selected reclamation approach included regrading and rock cover placement to detain and attenuate storm water and mitigate tailing remobilization by wind and surface water erosion. Regrading focused on regrading the dam faces to a more stable condition, including placement of a benign waste rock cover over all exposed tailing materials. Because of previous off-site surface water discharge impacts by remobilized tailing, the reclamation included temporary storm-water runoff detention to allow the water to evaporate and infiltrate. Storm water detention was considered in lieu of storm water discharge because hydraulic structures such as spillways and rock-lined channels constructed in tailing materials generally result in high maintenance and failure during large runoff events.
I provided lead design development and construction QA / QC, including surface water hydrology/hydraulics and geotechnical / stability designs, from concept through construction and as-built development.
