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CM0001645 <br />Page 17 • <br />5.0 Recommendations <br />Table 5 presents a summary of "packaged" reclamation measures for the ERV. These packages <br />were selected based on compatibility with site conditions and meeting Climax's overall <br />reclamation objectives. As shown, the scope, cost and time estimate for each package vary <br />considerably. As expected, the more expensive and large-scope reclamation measure packages <br />include active remediation and have total estimated costs in the 4 to 5 million dollars range. The <br />second reclamation measure package employs a passive approach to reclamation and is <br />substantially lower in cost and effort (ranging between $580,000 to $710,000). <br />The packaged reclamation measures presented in Table 5 were selected based on the current site <br />conditions as discussed in Section 2.0 of this report. However, final reclamation selection for the <br />ERV will require obtaining some additional site data as follows: <br />Chemical characterization of the Robinson Lake sludges will be required to <br />determine the applicability of passive reclamation to Robinson Lake. The <br />chemical characteristics of the sludges is the critical component in deciding <br />whether the sludges are amenable to wet closure; <br />If passive treatment of the No. 1 Tailing Dam seeps is a desirable reclamation <br />measure, an engineering evaluation, based on seep water quality and rate, will be <br />required to design the passive treatment drain. The engineering evaluation will be <br />needed to ensure a cost-effective drain can be designed to be compatible with site <br />conditions; and <br />• Reclamation measures, which include construction of soil embankments <br />(i.e.. No. 1 Tailing Dam seep water impoundment, or raising of Eagle Park <br />Reservoir Dam), will require a geotechnical field investigation to verify <br />that sufficient quantity and quality of borrow material exists, as assumed in <br />the cost estimate. <br /> <br />C <br /> <br /> <br /> <br />Additionally, each reclamation measure presented in this report was evaluated as a stand-alone <br />"module." Therefore, if desired, Climax can tailor another package to suite its corporate goals for <br />reclamation of the ERV. <br />• <br />° Envilronmental <br />WE =_