Laserfiche WebLink
Demonstration of Compliance Climax Molybdenum Company <br /> With Regulation 41 Permit M-1977-493 <br /> Manganese,Dissolved <br /> Site Number = Sample Date (mg/L) <br /> EVMW-3D 05/29/2014 Inaccessible <br /> EVMW-31) 06/18/2014 0.005 <br /> EVMW-3D 07/29/2014 0.0067 <br /> EVMW-31) 08/18/2014 0.015 <br /> EVMW-31) 09/10/2014 0.0564 <br /> EVMW-3 D 10/30/2014 0.005 <br /> EVMW-31) 11/11/2014 0.0059 <br /> EVMW-3 D 12/09/2014 0.0269 <br /> EVMW-31) 03/26/2015 0.023 <br /> EVMW-3D 06/16/2015 0.029 <br /> EVMW-3 D 08/19/2015 0.012 <br /> EVMW-3 D 11/10/2015 0.015 <br /> EVMW-3D 01/26/2016 0.02 <br /> EVMW-3 D 06/08/2016 0.046 <br /> EVMW-3D 08/31/2016 0.050 <br /> Baseline Average 0.024 <br /> Baseline Std. Dev.(o) 0.021 <br /> Mean+2v 0.066 <br /> Monitoring data in Appendix B were compared against this value in accordance with Section 5.2.1 <br /> of the WQMP; maintaining manganese at this level would be in compliance with Regulation 41. <br /> 4.2.4 Ambient-Based Manganese Value for EV-MW-004 <br /> EV-MW-004 is a deeper bedrock POC well, constructed in September 2012 above Eagle Park <br /> Reservoir. Sampling at this location was conducted on a quarterly basis, with additional <br /> monitoring on a more frequent basis from April 2013 through 2014. As described previously, <br /> there have been no new or increased sources of groundwater contamination initiated in the area <br /> subsequent to January 31, 1994, and the variable manganese concentrations observed in <br /> groundwater at this well are believed to be influenced by naturally occurring sources or conditions. <br /> These data are deemed suitable to determine existing ambient quality representative of <br /> groundwater quality on January 31, 1994. Table 4-3 lists all results for manganese at this well <br /> through the third quarter of 2016 and the calculation of the ambient value. <br /> December 2016 18 <br />