Proposed Action Description Clause Samples

Proposed Action Description. The EE/CA identified, evaluated, and screened potentially applicable technologies for reducing identified human health and ecological risks posed by the mine-affected areas of the Site. The applicable technologies were then assembled into candidate removal action alternatives. Five removal action alternatives for mine rock areas and four removal actions for mine portals were evaluated. These alternatives represent well established and proven technologies that have been implemented at similar uranium mine sites to address similar conditions. The removal action alternatives for mine rock include: • Alternative M-1 – No Action • Alternative M-2 – In-Place Stabilization with Stormwater and Institutional Controls • Alternative M-3 – In-Place Covering of Mine Rock Piles • Alternative M-4 – Excavation, Consolidation and Cover at Mine Affected Areas • Alternative M-5 – Excavation, Consolidation and Cover at Open Pit Repository The removal action alternatives for mine portals include: • Alternative P-1 – No Action • Alternative P-2 – Close Upper Mine Openings with 300-Foot Level Portal Gate • Alternative P-3 – Close Upper Mine Openings with 300-Foot Level Portal Rock Backfill Closure • Alternative P-4 – Close Upper Mine Openings and 300-Foot Level Portal Concrete Bulkhead Based on the detailed and comparative analysis of the removal action alternatives, the combination of Mine Rock Alternative M-5 and Portal Alternative P-4 best satisfies the evaluation criteria. Both the mine rock and the mine portal alternatives are protective of human health and the environment in reducing or eliminating the exposure pathways and risks. Both alternatives are effective in reducing incremental radiation risks due to external gamma radiation and inhalation of radon decay products associated with mine rock and the inhalation of radon decay products associated with the mine openings. The alternatives also comply with State and Federal Applicable or Relevant and Appropriate Requirements (ARARs). However, the alternatives will not eliminate the Site-wide risk to human health, as radiation risks from background gamma radiation and radon in the naturally mineralized area exceed the acceptable human health risk and dose criteria. • Removal of ore rock within the intertidal zone associated with former loading ramps and ore loading operations and consolidation at the Open Pit Repository. • Removal of the miscellaneous solid waste and debris and transport for off-site recycling and disposal,...