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Demonstration of Compliance Climax Molybdenum Company <br /> With Regulation 41 Permit M-1977-493 <br /> which standards specific to the area have been adopted, therefore the Interim Narrative Standard <br /> under the CBSG is applicable. DRMS Hard Rock Metal Mining Rule (HRMMR) 3.1.7(2)(c), <br /> requires the use of the groundwater quality table values in the CBSG as a guide for establishing <br /> numeric protection limits or permit conditions. In situations where ambient groundwater exceeds <br /> groundwater table values, the rule requires establishing permit conditions to protect existing and <br /> reasonably potential future uses against further lowering of groundwater quality. <br /> The WQMP therefore establishes the criteria for(and demonstrates) compliance with Regulation <br /> 41 at Climax as of December 16, 2011 (date of TR-18 approval). Specifically, the WQMP states: <br /> "Consistent with DRMS rules, Numeric Protection Levels (NPLs) will be established for POC <br /> groundwater wells using the CBSG Table Value Standards as a guide with consideration given to <br /> baseline data, where available. In instances where the existing groundwater quality exceeds a <br /> CBSG table value, an alternate NPL is selected, based on the Interim Narrative Standard, to <br /> protect against the further lowering of groundwater quality. <br /> The following sections of this document demonstrate that groundwater data from POC wells were <br /> collected in accordance with the approved WQMP. Consistent with the methodology approved <br /> by DRMS as described in Section 5 of the WQMP, available monitoring data and other available <br /> information were compared against the Interim Narrative Standard of the CBSG. <br /> December 2016 2 <br />