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TR -18 to Permit M- 1977 -342 <br />Environmental Protection Plan <br />12. WATER QUALITY MONITORING PLAN <br />The water treatment and discharge systems are permitted as discussed previously (CDPS Permit <br />CO- 0041467 for the Mine; CO- 0000230 for the Mill). These permits require extensive <br />monitoring. Detailed information regarding the types of monitoring, parameters, frequency, <br />reporting requirements, methods and analyses are found in these permits. The Henderson Mine <br />and Mill stream and groundwater sampling locations are presented in Figures 1 and 2 and <br />summarized in Tables 12 and 13. These include locations that are currently monitored as part of <br />the approved GWMP. <br />The CDPS Permit (No. CO- 0000230) identifies one Outfall (004A) at the Henderson Mill site <br />which would require monitoring should a discharge or bypass of process water be authorized. <br />Since the mill operates in a closed system, monitoring only is required in the event of a <br />discharge. Detailed information regarding the types of monitoring, parameters, frequency, <br />reporting requirements, methods and analyses is found in that permit. <br />TR -16 stipulates additional monitoring as discussed in section 9.0 and 11.0 above. <br />Climax Molybdenum Company <br />Henderson Operations <br />October, 2012 <br />Page 32 of 40 <br />