Rilda Creek Fish and Invertebrate Monitoring, Emery County, Utah (2006-2017)

In 2006, Energy West Mining Company developed a new mine portal facility in Rilda Canyon, Emery County, Utah, to provide closer access to the existing mining area, reduce travel time for miners, improve personnel safety, and provide an additional air intake to meet Mine Safety and Health Administration (MSHA) requirements. The main objective of this project was to assess baseline conditions and monitor potential effects of the new mine portal on water quality, fish, and the aquatic invertebrate community in Rilda Creek. This study addressed differences between control and experimental sites and across years (pre- and post-construction). RedFISH monitored fish, aquatic invertebrates, and water quality. Under contract with PacifiCorp/Interwest Mining Company, RedFISH prepared study design and implemented monitoring assessments, conducted statistical analysis, summarized data, and provided technical reports from 2006 to 2017.