Tierra Group completed the design for two 3-meter upstream raises to an existing paste tailings storage facility at New Jersey Mining Company’s New Jersey Mill site near Kellogg, Idaho. Work included performing a cone penetration testing (CPT) investigation of the existing paste tailings, civil design of the embankment raises, slope stability analyses, preparing an Issued for Construction (IFC) drawing and technical specifications package, and preparing and submitting a dam safety application for raise construction to the Idaho Department of Water Resources (IDWR).