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COLORADO LEGACY LAND <br /> $CHWARTZWALDER MINE <br /> EXHIBIT E. RECLAMATION PLAN <br /> E.1. CONCEPTUAL CONSIDERATION <br /> This section has not changed from the 2012 Mine Plan Amendment 4. <br /> E.2. INTERCEPTION AND TREATMENT OF ALLUVIAL GROUNDWATER <br /> This section has not changed from the 2012 Mine Plan Amendment 4. <br /> E.3. ISOLATION OF RALSTON CREEK FROM SOURCES OF IMPACTS <br /> This section has not changed from the 2012 Mine Plan Amendment 4. <br /> E.4. MITIGATION PLAN FOR SOLID SOURCE TERM MATERIALS <br /> The alluvial valley excavation project began in the spring of 2018. Technical Revision 14 initial estimated <br /> 33,000 to 54,0000 cubic yards(CY)of soil were impacted by historical uranium mining practices. As of January <br /> 2020,approximately 19,500 CY of impacted soils have been excavated and disposed of onsite in the CV Glory <br /> Hole of the Schwartzwalder Mine. These materials were excavated form approximately 50% of the <br /> contaminated areas identified in Technical Revision 14,indicating that an additional (estimated) 39,000 CY of <br /> impacted soils will need to be excavated. The capacity of the CV Glory Hole was estimated in Technical Revision <br /> 14 to be approximately 56,000 CY. However,as of January 2020,the CV Glory Hole is approximately 50 %full, <br /> with an estimated 28,000 CY of capacity remaining. In order to accommodate the additional volume of <br /> excavated materials,this amendment expands the affected permit area to include the former Black Forest Mine. <br /> The former Black Forest Mine is a dry underground aggregate mine wholly owned by CLL and within CLL's <br /> property boundary. It has an estimated capacity of 15,000 CY. The former Black Forest Mine permit(Permit <br /> No.M-2001-036)was formally closed in 2019. In accordance with Colorado Hard Rock Mining Rule 6.4.21.(19), <br /> CLL proposes disposing of excavated materials from the alluvial valley in either the former Black Forest Mine <br /> or the CV Glory Hole of the Schwartzwalder Mine. Technical Revision 14 documents the de minimums impact <br /> of alluvial soils disposed of in the CV Glory Hole. The former Black Forest Mine is a dry mine and is not <br /> connected to the adjacent Schwartzwalder mine workings. Dry mines do not have the opportunity to contact <br /> surface water or groundwater, therefore the impacts to water quality onsite are de minimis. Furthermore,as <br /> stated in Technical Revision 14,"...waste rock within the alluvial fill has demonstrated no propensity to acidify <br /> groundwater. This is based on sampling of several small seeps and the fact that pH of deep bedrock <br /> groundwater in the vicinity of the CV Glory Hole is approximately neutral or slightly basic."After the excavation <br /> is complete,and in accordance with Technical Revision 9,highly engineered water tight bulk heads will be used <br /> to permanently seal all mine portals. <br /> This reclamation strategy is consistent with the current disposal strategy and regulatory principles for <br /> maximizing the long-term protection of human health and the environment. Disposal inside underground mine <br /> workings provides complete /permanent isolation from active surface environment,no impact or de minimis <br /> impact to onsite water quality,no long-term maintenance,and no additional engineering design. This strategy <br /> AUGUST 2020 9 AMENDMENT 5 <br />