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11.3.7 Monitoring Responses <br />The information presented below reflects the currently approved criteria for responding <br />to obtained monitoring data that demonstrate significant changes from previous obtained <br />results. The situations outlined below are those that require further action. <br />Underdrains: The 30 -day running average of CNwAD monitoring data for an underdrain <br />exceeds 1.0 mg/L and the 30 -day running average pH value from monitoring data for the <br />same underdrain for the same period exceeds 9.0. <br />LDS: The 30 -day running average of CNwAD monitoring data for a LDS exceeds 0.5 <br />mg/L and the 30 -day running average pH value for the same LDS monitoring data for the <br />same period exceeds 9.0. <br />HVSCS: The average of the water level monitoring data in the PSSAs exceeds 80 <br />percent of the total capacity of the PSSA in a sustained manner. <br />LVSCS, LDCRS: The transducers monitoring data in the LVSCS or LDCRS exceed two <br />feet in a sustained manner <br />The first response to any of the conditions listed above will be to verify that the <br />measurements and data are accurate. This may involve re- sampling or revisiting the <br />monitoring location to confirm the initial monitoring results. In the event that initial <br />monitoring results are confirmed, verbal notice will be provided to the OMLR. <br />Recommendations will be provided to the OMLR regarding further analysis of the <br />situation and data and, if warranted, appropriate corrective actions will be developed. <br />This may include, but not be limited to, providing a written plan to OMLR regarding <br />proposed measures for addressing the situation, changing flow rates to the various <br />portions of the VLFs, discontinuing the addition of dilute sodium cyanide solution or <br />make -up water, initiating detoxification operations, or other appropriate responses. <br />11.4 Blast (Seismic) Monitoring <br />Previously agreed upon commitments by CC &V for monitoring of blasting activities associated <br />with the Cresson Project and potential effects from those activities will be continued as part of <br />MLE2 activities. The agreements pertinent to blast monitoring at the Cresson Project are: <br />• CC &V will monitor ground motion in the vicinity of the Main Cresson Mine and North <br />Cresson Mine areas during production blasting until sufficient information and data are <br />collected to affirm that sensitive structures are not subjected to a ppv of >0.5 ips. <br />Cripple Creek & Victor Gold Mining Company <br />Cresson Project Mine Life Extension 2 <br />11 -10 <br />