Pennsylvania Mine Removal Update Snake River Task Force Meeting February 12, 2014

Project Objectives Reduce exposure levels and control off-site migration of contaminants Phased approach to deal with both surface and sub-surface sources Successful collaboration (combine resources) Removal Action under 40 CFR, Section (b)(2)

…2035 Underground Investigations(DRMS) Phase 1: Site Preparation Phase 2: Underground Bulkhead #1 Phase 3: Reclaim Waste Piles Phase 4: Seal-off Level C Surface Water Pathways (if necessary) Phase 5: Underground Bulkhead #2 (if necessary) Phase 6: Construction of Treatment System (if necessary) Phase 7: Post-removal Site Control (if necessary) Progress Completed Planned

FY 2013 Work Completed Roads/Access (EPA) – Surface, drainage improvements, crossings Site Prep (EPA) – Lay down area, rock source, drainage Water/Waste Management for Underground Work (EPA) Prep/Clean/Secure Level F Adit (DRMS) Level F Waste Pile consolidation/improvement (EPA)

Level F Prep Bulkhead #1 Location Bulkhead #2 Location (optional) View of F-level Cross Cut

Plans for FY-14 Mobilize July 7 th Install First Bulkhead (DRMS) Waste/Water Management (EPA) Address Level C and Upper Works (EPA) Maintain Roads/Access (EPA) Begin Re-vegetation (EPA) Clean/Investigate the Drift (DRMS)

Questions? View of C-Level Cross Cut